Wrong and completely wrong.
The usual (as in this case) was a hack on a Linux web server set up incorrectly with PHP (or perhaps a new flaw in PHP that script kiddies got hold of - the article does say it was a bit of a naive attempt). All of MS virii/trojans/bots stuff is client side and can be activated with a simple click on a link in an e-mail, or a stupid facebook page about cats.
Biting the hand that feeds IT
