поиск по репозиторию рулит PDF files password cracker pdfcrack is a simple tool for recovering passwords from pdf-documents. It should be able to handle all pdfs that uses the standard security handler but the pdf-parsing routines are a bit of a quick hack so you might stumble across some pdfs where the parser needs to be fixed to handle. pdfcrack allows configure the size of the searched password, use an external wordlist file and save cracking sessions to restore it later. Homepage: http://sourceforge.net/projects/pdfcrack