Re: Fake paypal email triggers -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM

Dave Funk <[email protected]>
Newsgroups gmane.mail.spam.spamassassin.general
Message-ID <alpine.OSX.2.02.2501291052370.36386@localhost> 
The examples of this scam that I've seen use that same PayPal comment tactic but 
then route it to an Office-365 mailbox which has a redirect to the victim's 
address.
So the resultant message has both PayPal & O-365 valid DKIM signatures; not to 
mention the multiple KB of O-365 header cruft which makes it hard to trace the 
original source.

They tend to fall into two general themes:
1) call us NOW or we're going to auto-charge your account
2) Oopsies, you were miss-charged, call us to get this charge refunded to your 
account.

In most cases all the usual PayPal & O-365 checks pass with flying colors, it's 
just the text comment that has the scam payload.

As our organization is heavily invested in Microsoft/O-365 we get tons of valid 
necessary communications from O-365 so I cannot block/penalize O-365 messages.
Thus even Bayes training on this scam garbage doesn't help me, I get 1000x legit 
O-365 messages to each such scam.
Ugg.

On Wed, 29 Jan 2025, Alan via users wrote:

> 
> As far as I can tell, they're valid notifications from PayPal, and probably useful for legitimate purposes. What the messages are
> doing is attempting to trigger sufficient anxiety that the recipient calls the phone number in the message, which connects them
> to a scammer. It will get worse, and then hopefully the folks at PayPal will find a way to eliminate it (they could refuse to
> send a phone number in the message, for example).
> 
> On 2025-01-29 03:47, Mark London wrote:
>       This my pet peeve.   I set USER_IN_DEF_DKIM_WL  to 0.001 a long time ago, and it hasn't affected me at all.
>
>       But my view is probably not mainstream.
>
>       As an aside, I've added rules to filter for the recent fake requests for money, that abuse that feature, which exists
>       on  PAYPAL and VENMO.  Rules can be easily created to detect these fake requests, if you look at some the examples
>       that come through.  They aren't very sophisticated. FWIW.
>
>       Now I'll go back into hiding, - Mark
>
>       On 1/29/2025 3:23 AM, Niamh Holding wrote:
>             Hello
>
>             Given the From: address can be so easily faked is a rule testing its validity a great idea?
> 
>
>             Headers-
>
>             Return-Path: <[email protected]>
>             X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on iron.holtain.net
>             X-Spam-Level:
>             X-Spam-Status: No, score=-6.5 required=4.5 autolearn=no autolearn_force=no
>             X-Spam-Report:
>                      *  0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2)
>                      *      [40.93.128.29 listed in wl.mailspike.net]
>                      * -0.0 SPF_PASS SPF: sender matches SPF record
>                      *  0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level
>                      *      mail domains are different
>                      * -0.0 SPF_HELO_PASS SPF: HELO matches SPF record
>                      * -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM
>                      *      welcome-list
>                      *  0.1 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
>                      *  0.0 HTML_MESSAGE BODY: HTML included in message
>                      *  0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily
>                      *       valid
>                      * -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from
>                      *      author's domain
>                      * -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature
>                      *  1.3 RCVD_IN_VALIDITY_RPBL RBL: Relay in Validity RPBL,
>                      *      https://senderscore.org/blocklistlookup/
>                      *      [40.93.128.29 listed in bl.score.senderscore.com]
>                      * -0.0 T_SCC_BODY_TEXT_LINE No description available.
>                      *  1.0 POSSIBLE_PAYPAL_PHISH_03 Claims to be from paypal, sent to
>                      *      Microsoft365 domain - likely fraud if you don't use MSFT365!
>                      *  0.0 T_REMOTE_IMAGE Message contains an external image
>                      * -1.3 DKIMWL_WL_HIGH DKIMwl.org - High trust sender
>             X-Spam-Relays-Untrusted: [ ip=40.93.128.29
>                      rdns=mail-eastasiaazlp17011029.outbound.protection.outlook.com
>                      helo=HK3PR03CU002.outbound.protection.outlook.com by=iron.holtain.net
>                      ident= envfrom= intl=0 id=8EA1DC000546 auth= msa=0 ] [
>                      ip=2603:1096:405:8e::12 rdns=TYSPR04MB8220.apcprd04.prod.outlook.com
>                      helo=TYSPR04MB8220.apcprd04.prod.outlook.com
>                      by=TYZPR04MB7906.apcprd04.prod.outlook.com ident= envfrom= intl=0
>                      id=15.20.8377.21 auth= msa=0 ] [ ip=2603:1096:820:11b::9
>                      rdns=KL1PR04MB7539.apcprd04.prod.outlook.com
>                      helo=KL1PR04MB7539.apcprd04.prod.outlook.com
>                      by=TYSPR04MB8220.apcprd04.prod.outlook.com ident= envfrom= intl=0
>                      id=15.20.8377.21 auth= msa=0 ] [ ip=fe80::b078:df3:b558:4f13 rdns=
>                      helo=KL1PR04MB7539.apcprd04.prod.outlook.com
>                      by=KL1PR04MB7539.apcprd04.prod.outlook.com ident= envfrom= intl=0 id=
>                      auth= msa=0 ] [ ip=2603:1096:4:b8::34
>                      rdns=SGXP274CA0022.SGPP274.PROD.OUTLOOK.COM
>                      helo=SGXP274CA0022.SGPP274.PROD.OUTLOOK.COM
>                      by=TYZPR04MB7271.apcprd04.prod.outlook.com ident= envfrom= intl=0
>                      id=15.20.8377.21 auth= msa=0 ] [ ip=2603:1096:4:b8:cafe::6f
>                      rdns=SG2PEPF000B66CE.apcprd03.prod.outlook.com
>                      helo=SG2PEPF000B66CE.apcprd03.prod.outlook.com
>                      by=SGXP274CA0022.outlook.office365.com ident= envfrom= intl=0
>                      id=15.20.8398.17 auth= msa=0 ] [ ip=2a01:111:f403:48::209
>                      rdns=EUR03-VI1-obe.outbound.protection.outlook.com
>                      helo=EUR03-VI1-obe.outbound.protection.outlook.com
>                      by=SG2PEPF000B66CE.mail.protection.outlook.com ident= envfrom= intl=0
>                      id=15.20.8398.14 auth= msa=0 ] [ ip=2603:10a6:5:10::31
>                      rdns=DB7P192MB0331.EURP192.PROD.OUTLOOK.COM
>                      helo=DB7P192MB0331.EURP192.PROD.OUTLOOK.COM
>                      by=AS8P192MB2065.EURP192.PROD.OUTLOOK.COM ident= envfrom= intl=0
>                      id=15.20.8377.22 auth= msa=0 ] [ ip=fe80::306f:e2a6:6620:fff0 rdns=
>                      helo=DB7P192MB0331.EURP192.PROD.OUTLOOK.COM
>                      by=DB7P192MB0331.EURP192.PROD.OUTLOOK.COM ident= envfrom= intl=0 id=
>                      auth= msa=0 ] [ ip=2603:10a6:10:120::12
>                      rdns=DB8PR06CA0038.eurprd06.prod.outlook.com
>                      helo=DB8PR06CA0038.eurprd06.prod.outlook.com
>                      by=PAWP192MB2250.EURP192.PROD.OUTLOOK.COM ident= envfrom= intl=0
>                      id=15.20.8377.22 auth= msa=0 ] [ ip=2603:10a6:10:120:cafe::e9
>                      rdns=DU2PEPF00028CFD.eurprd03.prod.outlook.com
>                      helo=DU2PEPF00028CFD.eurprd03.prod.outlook.com
>                      by=DB8PR06CA0038.outlook.office365.com ident= envfrom= intl=0
>                      id=15.20.8377.22 auth= msa=0 ] [ ip=66.211.170.90
>                      rdns=mx4.phx.paypal.com helo=mx4.phx.paypal.com
>                      by=DU2PEPF00028CFD.mail.protection.outlook.com ident= envfrom= intl=0
>                      id=15.20.8398.14 auth= msa=0 ]
>             X-Spam-Language: en
>             X-Spam-DKIM-i: @paypal.com
>             X-Spam-DKIM-d: paypal.com
>             X-Original-To: [email protected]
>             Delivered-To: [email protected]
>             Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=40.93.128.29;
>             helo=hk3pr03cu002.outbound.protection.outlook.com;
>             [email protected]; receiver=<UNKNOWN>
>             DMARC-Filter: OpenDMARC Filter v1.4.2 iron.holtain.net 8EA1DC000546
>             Authentication-Results: iron.holtain.net; dmarc=pass (p=reject dis=none) header.from=paypal.com
>             Authentication-Results: iron.holtain.net; spf=pass smtp.mailfrom=smpn7wonogiri.sch.id
>             DKIM-Filter: OpenDKIM Filter v2.11.0 iron.holtain.net 8EA1DC000546
>             Authentication-Results: iron.holtain.net;
>                      dkim=pass (2048-bit key, unprotected) header.d=paypal.com [email protected]
>             header.a=rsa-sha256 header.s=pp-dkim1 header.b=Ti5ZlN8t
>             Received: from HK3PR03CU002.outbound.protection.outlook.com
>             (mail-eastasiaazlp17011029.outbound.protection.outlook.com [40.93.128.29])
>                      by iron.holtain.net (Postfix) with ESMTPS id 8EA1DC000546
>                      for <[email protected]>; Tue, 28 Jan 2025 18:08:36 +0000 (GMT)
>             Received: from TYSPR04MB8220.apcprd04.prod.outlook.com (2603:1096:405:8e::12)
>               by TYZPR04MB7906.apcprd04.prod.outlook.com (2603:1096:405:a9::11) with
>               Microsoft SMTP Server (version=TLS1_2,
>               cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8377.21; Tue, 28 Jan
>               2025 18:08:28 +0000
>             Received: from KL1PR04MB7539.apcprd04.prod.outlook.com (2603:1096:820:11b::9)
>               by TYSPR04MB8220.apcprd04.prod.outlook.com (2603:1096:405:8e::12) with
>               Microsoft SMTP Server (version=TLS1_2,
>               cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8377.21; Tue, 28 Jan
>               2025 18:08:00 +0000
>             Received: from KL1PR04MB7539.apcprd04.prod.outlook.com
>               ([fe80::b078:df3:b558:4f13]) by KL1PR04MB7539.apcprd04.prod.outlook.com
>               ([fe80::b078:df3:b558:4f13%3]) with mapi id 15.20.8377.021; Tue, 28 Jan 2025
>               18:07:59 +0000
>             Received: from SGXP274CA0022.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::34) by
>               TYZPR04MB7271.apcprd04.prod.outlook.com (2603:1096:400:44f::6) with Microsoft
>               SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
>               15.20.8377.21; Tue, 28 Jan 2025 17:50:17 +0000
>             Received: from SG2PEPF000B66CE.apcprd03.prod.outlook.com
>               (2603:1096:4:b8:cafe::6f) by SGXP274CA0022.outlook.office365.com
>               (2603:1096:4:b8::34) with Microsoft SMTP Server (version=TLS1_3,
>               cipher=TLS_AES_256_GCM_SHA384) id 15.20.8398.17 via Frontend Transport; Tue,
>               28 Jan 2025 17:50:17 +0000
>             Authentication-Results: spf=softfail (sender IP is 2a01:111:f403:48::209)
>               smtp.mailfrom=euroland.fr; dkim=pass (signature was verified)
>               header.d=paypal.com;dmarc=pass action=none header.from=paypal.com;
>             Received-SPF: SoftFail (protection.outlook.com: domain of transitioning
>               euroland.fr discourages use of 2a01:111:f403:48::209 as permitted sender)
>             Received: from EUR03-VI1-obe.outbound.protection.outlook.com
>               (2a01:111:f403:48::209) by SG2PEPF000B66CE.mail.protection.outlook.com
>               (2603:1096:f:fff5:0:1:0:5) with Microsoft SMTP Server (version=TLS1_3,
>               cipher=TLS_AES_256_GCM_SHA384) id 15.20.8398.14 via Frontend Transport; Tue,
>               28 Jan 2025 17:50:16 +0000
>             Received: from DB7P192MB0331.EURP192.PROD.OUTLOOK.COM (2603:10a6:5:10::31) by
>               AS8P192MB2065.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:5bd::19) with Microsoft
>               SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
>               15.20.8377.22; Tue, 28 Jan 2025 17:50:13 +0000
>             Received: from DB7P192MB0331.EURP192.PROD.OUTLOOK.COM
>               ([fe80::306f:e2a6:6620:fff0]) by DB7P192MB0331.EURP192.PROD.OUTLOOK.COM
>               ([fe80::306f:e2a6:6620:fff0%5]) with mapi id 15.20.8377.021; Tue, 28 Jan 2025
>               17:50:13 +0000
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>               by PAWP192MB2250.EURP192.PROD.OUTLOOK.COM (2603:10a6:102:34e::21) with
>               Microsoft SMTP Server (version=TLS1_2,
>               cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8377.22; Tue, 28 Jan
>               2025 17:49:51 +0000
>             Received: from DU2PEPF00028CFD.eurprd03.prod.outlook.com
>               (2603:10a6:10:120:cafe::e9) by DB8PR06CA0038.outlook.office365.com
>               (2603:10a6:10:120::12) with Microsoft SMTP Server (version=TLS1_3,
>               cipher=TLS_AES_256_GCM_SHA384) id 15.20.8377.22 via Frontend Transport; Tue,
>               28 Jan 2025 17:49:51 +0000
>             Authentication-Results-Original: spf=pass (sender IP is 66.211.170.90)
>               smtp.mailfrom=paypal.com; dkim=pass (signature was verified)
>               header.d=paypal.com;dmarc=pass action=none header.from=paypal.com;
>             Received-SPF: Pass (protection.outlook.com: domain of paypal.com designates
>               66.211.170.90 as permitted sender) receiver=protection.outlook.com;
>               client-ip=66.211.170.90; helo=mx4.phx.paypal.com; pr=C
>             Received: from mx4.phx.paypal.com (66.211.170.90) by
>               DU2PEPF00028CFD.mail.protection.outlook.com (10.167.242.181) with Microsoft
>               SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
>               15.20.8398.14 via Frontend Transport; Tue, 28 Jan 2025 17:49:50 +0000
>             DKIM-Signature: v=1; a=rsa-sha256; d=paypal.com; s=pp-dkim1; c=relaxed/relaxed;
>                      q=dns/txt; [email protected]; t=1738086589;
>                      h=From:From:Subject:Date:To:MIME-Version:Content-Type;
>                      bh=x4gXgJPzgMJS4s6SslPDX50DN37l6UgxYv1Fke0blj4=;
>                      b=Ti5ZlN8t9vOP4oHPw6S7EFSv5qCloXAAcGFhN1UUYPh8b+kHEbenBvfdHtOlBzCF
>                      7lCfc0LH2NGC6vIhFkmbmn490P6XkzLMgQwi9IcUaQTZrUIeD8r5YPRT5b/Y4RmA
>                      VqAbuOE/7S20QxDlpoCqOprRhS/39AvB5W/QuCyzPn6uf+IjwQjyd7f8imwXsGGD
>                      O+hiNma12uuMIgpeuAdk5PNYrZJv9UZA6Ta9OZP1LyowQPFIdPaIJf4ACHUkBGaa
>                      fChq5r8wr7lBUGY/5ft8dfpmzcj3QiEcytLWYQ4niDlTJAMZcPI3OSuoyiwXjFJq
>                      yuYqt5ZZhMyeauUvreQNbw==;
>             Content-Transfer-Encoding: quoted-printable
>             Content-Type: text/html; charset="UTF-8"
>             Date: Tue, 28 Jan 2025 09:49:49 -0800
>             Message-ID: <AD.CB.51299.DB819976@ccg01mail06>
>             MIME-Version: 1.0
>             From: "[email protected]" <[email protected]>
>             To: Sharon Turner <[email protected]>
>             Subject: You've sent a money request
>             X-MaxCode-Template: RT000241
>             X-PP-Priority: 0-paypal-false
>             PP-Correlation-Id: f388091b585de
>             X-PP-Email-transmission-Id: 44cd845b-dda0-11ef-bbbe-0f3c32714b27
>             X-PP-REQUESTED-TIME: 1738086577206
>             X-Email-Type-Id: RT000241
>             AMQ-Delivery-Message-Id: nullval
>             X-XPT-XSL-Name: nullval
>             X-EOPAttributedMessage: 1
>             X-MS-TrafficTypeDiagnostic:
>                     DU2PEPF00028CFD:EE_|PAWP192MB2250:EE_|AS8P192MB2065:EE_|SG2PEPF000B66CE:EE_|TYZPR04MB7271:EE_|TYSPR04MB8220:EE_|TYZPR04MB7906:EE
>             _
>             X-MS-Office365-Filtering-Correlation-Id: 198a6f79-7e5b-4b79-7cbb-08dd3fc43981
>             X-Moderation-Data: 1/28/2025 5:50:06 PM
>             X-LD-Processed: 597638ac-1f39-416f-b8b6-2a57af6395fe,ExtAddr
>             X-Auto-Response-Suppress: DR, OOF, AutoReply
>             X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8P192MB2065
>             X-EOPTenantAttributedMessage: 7ab5503a-6b18-41b1-ab89-bb02ef5b5daf:0
>             X-MS-Exchange-Transport-CrossTenantHeadersStripped: SG2PEPF000B66CE.apcprd03.prod.outlook.com
>             X-MS-Exchange-Transport-CrossTenantHeadersPromoted: SG2PEPF000B66CE.apcprd03.prod.outlook.com
>             X-MS-PublicTrafficType: Email
>             X-MS-Office365-Filtering-Correlation-Id-Prvs:
>               5c11a4de-9c64-4aae-d96a-08dd3fc42a48
>             X-Moderation-Data: 1/28/2025 6:07:58 PM
>             X-LD-Processed: 7ab5503a-6b18-41b1-ab89-bb02ef5b5daf,ExtAddr,ExtAddr
>             X-OriginatorOrg: smpn7wonogiri.sch.id
>             X-MS-Exchange-CrossTenant-Network-Message-Id: 198a6f79-7e5b-4b79-7cbb-08dd3fc43981
>             X-MS-Exchange-CrossTenant-Id: 7ab5503a-6b18-41b1-ab89-bb02ef5b5daf
>             X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CE.apcprd03.prod.outlook.com
>             X-MS-Exchange-CrossTenant-AuthAs: Anonymous
>             X-MS-Exchange-CrossTenant-FromEntityHeader: Internet
>             X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Jan 2025 18:07:59.9852
>               (UTC)
>             X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYZPR04MB790
> 
> 
> --
> For SpamAssassin Users List
> 
>

-- 
Dave Funk                               University of Iowa
<dbfunk (at) engineering.uiowa.edu>     College of Engineering
319/335-5751   FAX: 319/384-0549        1256 Seamans Center, 103 S Capitol St.
Sys_admin/Postmaster/cell_admin         Iowa City, IA 52242-1527
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