PDF IRM Protector for SharePoint 2007

PDF file format is not supported by Microsoft by default with regards to IRM.

Reference links:

http://pdfirmprotector.codeplex.com/
 

http://www.sharepointsecurity.com/sharepoint/sharepoint-development/pdf-irm-protector-for-sharepoint-2007-2010/

http://spnectar.wordpress.com/2010/06/18/deploy-foxit-pdf-secure-rms-protector-with-sharepoint-2007/

http://spnectar.wordpress.com/2010/06/18/deploy-windows-right-management-services-rms-with-sharepoint-2007/