The newly discovered vulnerability in Adobe Reader and Acrobat is being used to install a known Trojan that has been used in attacks against other Adobe vulnerabilities in the past. Researchers say the attacks are using the Sykipot Trojan as part of the payload in the attacks. When successful, the exploit will crash the Adobe application and then open a new document. In the sample analyzed by Brandon Dixon of 9bplus, the document was an employee survey that was targeted at employees of ManTech, a large defense contractor in the U.S.
Source: https://threatpost.com/attackers-using-known-trojan-exploits-adobe-zero-day-120811/75972/