You use the CPAN module, PDF::Extract.

Here's part one of the synopsis from the PDF::Extract Plain Old Documentation:

use PDF::Extract;
$pdf=new PDF::Extract;
$pdf->servePDFExtract(PDFDoc=>"c:/Docs/my.pdf", PDFPages=>"1-3 31-36")
+;
[download]

Update: You just double-posted this question. Don't do that. Before your question shows up in Seekers of Perl Wisdom, it must be manually approved. This can take a few minutes. But your question is on record. No need to post it twice.