The digital signature mechanism for the Adobe Acrobat PDF viewer only verifies the PE header of executable code for a plug-in, which can allow attackers to execute arbitrary code in certified mode by making the plug-in appear to be signed by Adobe.Referenceshttp://www.kb.cert.org/vuls/id/549913http://lists.grok.org.uk/pipermail/full-disclosure/2003-March/004230.htmlhttp://www.kb.cert.org/vuls/id/JSHA-5EZQGZhttp://archives.neohapsis.com/archives/vulnwatch/2003-q1/0148.html
