"A brand new, highly sophisticated "zero-day" exploit for Adobe Acrobat and Adobe Reader that lets criminals infect computers with malicious software has been spotted in the wild.
According to FireEye, the Milpitas, Calif., computer-security company that uncovered the flaw, the exploit affects Acrobat and Reader versions 11.0.1 and earlier. Adobe has confirmed that."
Please go read that article. And make sure your Version of Adobe Acrobat is upgraded to Version 11. And follow the instructions to turn on "Protected View" in the above article.