Distributing firefox with preset home page

Is it allowed to redistribute Firefox with a different home (start) 
page as default, and still call it firefox?

http://www.foxload . com/firefox-de.html (link made unclickable) is 
doing exactly that. A quick test in a VM showed no other nasty things, 
but someone distributing outdated firefox versions from a 
official-looking, adwords-advertised site as a kind of "adware" does 
not exactly meet my definition of ethical behaviour.

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