From what I've read, the only thing that is consistent about this particular virus is the way it operates, and the message, not the subject, attachment, or sender..
It grabs files from My Documents and randomly sends them to people in your address book, often with the virus embedded in them..
Oh, and make sure you scan for it before october, it's set to do some serious damage, theres a 1 in 20 chance it will totally wipe your hd then, every time you boot up..
(and right now theres a 1 in 37 chance that it will fill up all the empty space on your hd with ones and zeros every time you boot up)..
So I wouldn't say it's targeted at UBB people, just random luck that the multihack files were taken from someone and mailed onwards..