JPG to PDF conversion gives PDFs static name

Imagine I take a bunch of JPGs and turn them into a PDF file.
Let's say the PDF file is created and called "1.pdf"
I open it in a program, such as evince, and the recognized filename at
the top is "1.pdf"

Well, then let's say I move that file to another folder.
Now, I rename that file into "lab.pdf"

Now, if I open the file again inside of evince, evince appears to
recognize it as "1.pdf" still. I don't know why this is.

It gets kind of annoying when I'm messing around with a lot of important
documents at once. I like to see what the header is.

Now, I think this is primarily an imagemagick issues, because
imagemagick has to give the PDF its name after converting all of those
jpgs into a pdf.

Anyone else encounter this bug?
Any ideas, solutions, and/or comments?