VUPEN Vulnerability Research Team discovered a critical vulnerability in Adobe Acrobat and Reader. This vulnerability is caused by a memory corruption error when processing the “newclass” operator (bytecode 0x58) while parsing Flash content within a PDF document, which could be exploited by attackers to execute arbitrary code by tricking a user into opening a malicious PDF file.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/91354/adobearnewclass-corrupt.txt
Source: https://packetstormsecurity.com/files/91354/Adobe-Acrobat-And-Reader-newclass-Memory-Corruption.html