Version 6 of Adobe Acrobat has an issue with the way it handles embedding macromedia flash files directly into a pdf. This allows a malicious website operator to steal local files from a user’s hard drive including cookie files.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34644/adobeReader6.txt
Source: https://packetstormsecurity.com/files/34644/adobeReader6.txt.html