Adobe Reader 8 and Adobe Acrobat 8 (versions earlier then 8.1.3) are prone to multiple denial of service and code execution exploits. Two days after the public release, exploitation code for the vulnerabilities of Adobe Reader and Acrobat has been released for the first time. The exploit code was released by Adobe on November 4th and November 6th, but it has not yet been released publicly by the public. The vulnerability code for Adobe Reader was released two days after that, and the exploit code has since been released.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/spammers-and-harvesters-find-new-ways/