Windows users have been warned time and time again of malware hiding behind icons and extensions belonging to files associated with legitimate software - most notably PDF, DOC and XLS files.
In spite of that, malware peddlers have had a lot success with this simple technique. It is no wonder, then, that they would try to use it on Mac users as well.
F-Secure shared its knowledge about a new dropper Trojan targeting that particular segment of users, disguised as a PDF file.