Researchers from security companies Zscaler and Seculert have issued a warning about bogus emails targeting employees of defense-related organizations around the world in order to trick them into installing malware.

“Dear Sir, It is a conference that you may possibly be interested in. More information is attached below,” says in the recent emails. The attached file is a specially crafted PDF that, at first glance, looks like a completely harmless invitation to a relevant industry conference such as the IEEE Aerospace Conference or an Iraq Peace Conference.

via HelpNet Security, continued here.