Note that many websites have their own advertising, unrelated to adware.
This is a worm that creates it own SMTP server and other applications like ICQ, PalTalk, Yahoo Messenger and others. The subject line will vary but will probably look like:
Love Speaks it all
Why Do We FOk?
pqnelhleyy ac1f2dbe 650e0eab
WoW But not for NoW
The worm will overwrite files with these extentions: