The Adobe PDF specification 1.3, as implemented by Adobe Acrobat before 8.0.0, allows remote attackers to have an unknown impact, possibly including denial of service (infinite loop), arbitrary code execution, or memory corruption, via a PDF file with a (1) crafted catalog dictionary or (2) a crafted Pages attribute that references an invalid page tree node.
https://exchange.xforce.ibmcloud.com/vulnerabilities/31364
http://www.vupen.com/english/advisories/2007/0930
http://www.us-cert.gov/cas/techalerts/TA07-072A.html
http://www.securitytracker.com/id?1017749
http://secunia.com/advisories/24479