Russian anti-virus company Doctor Web informs users about a new Trojan
for Mac OS X dubbed Trojan.SMSSend.3666. The malicious scheme used to
spread this Trojan is notorious among many Windows users but until now
it hasn't been employed to deceive owners of Macs. Trojan.SMSSend is a
fake installer which can be downloaded from various sites under the
guise of useful software.

http://news.drweb.com/show/?i=3138