According to what' I've read & seen, the AIM messages send out a broadcast to your entire buddy list, inviting them to download some Osama game. When the user downloads the game, the Buddylinks program is piggybacked on the software, which then sends a message to their buddy list, and so on and so on.
Here's a good look at the Buddylinks program installation specs:
http://us.mcafee.com/virusInfo/defau...virus_k=101007
Should also include removal tools, but if it doesn't, here's AIM's official what to do:
http://www.aim.com/help_faq/security/trojan.adp
BTW, the links all seem to come from the wugtv domain, if your an admin, might want to redirect that to localhost for a while.