Heap-based buffer overflow in SumatraPDF before 2.1 allows remote attackers to execute arbitrary code via a crafted PDF document, a different vulnerability than CVE-2012-4896.
http://technet.microsoft.com/security/msvr/msvr12-014
http://secunia.com/advisories/50656
http://code.google.com/p/sumatrapdf/source/browse/trunk/docs/releasenotes.txt