Hacker exploits PDF files without using a vulnerability

A security researcher has managed to create a proof-of-concept PDF file that executes an embedded executable without exploiting any security vulnerabilities.

The PDF hack, when combined with clever social engineering techniques, could potentially allow code execution attacks if a user simply opens a rigged PDF file.

 http://threatpost.com/en_us/blogs/hacker-finds-way-exploit-pdf-files-without-vulnerability-033010