And that makes it not a virus.. and it's not even the first Mac OS X trojan. That dis-honor goes to a 400k file that surfaced a couple of years ago pretending to be a compressed copy of the Microsoft Office for Mac Install CD. That one actually did some damage to the two or three greedy Mac users who downloaded it and ran it... it wiped their user directories... something they richly deserved.
The .jpg exif exploit in MS Windows would have scared me if it transported to Mac.