see Re: PDF GetInfo( for an approach that can be used in your case. I mean using Win32::OLE to manage Acrobat doing things for you. Exact commands that needed for you can be found at Acrobat SDK documentation or just in Acrobat.tlb file which usually exist in a directory where Acrobat is installed.

Also I completely agree with abstracts, it is a matter of fact that Adobe invented really imperfect security system.

svad