When I used PDF.pm for my local needs, I reworked it a lot, because it is not only warnings and strict unsafe, but also it does not always parse things correctly.
I did not succeeded polishing it to 100% working state yet.

Another solution - if your machine have Acrobat (exchange) you can use Win32::OLE module. It is not enough to have Acrobat Reader installed in this case :(

use strict;
use Win32::OLE;
use Win32::OLE::Const;

my $abat = Win32::OLE->new('AcroExch.App');
my $abdoc = Win32::OLE->new('AcroExch.AVDoc');
$abdoc->Open('d:\Documentation\perl\xtk.pdf','d:\Documentation\perl\xt
+k.pdf');
my $pddoc = $abdoc->GetPDDoc;
print "pp=".$pddoc->GetNumPages,"\n";
for (qw(Title Subject Author)) {
  print "$_:".$pddoc->GetInfo($_),"\n";
}
[download]

Acrobat SDK documentation have information about how automate it via OLE.

Warmest wishes,
Vadim