Install pdfcrack by entering the following commands in the terminal:
sudo apt update sudo apt install pdfcrack
Description:
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. . The main PDFCrack features are: . - Supports the standard security handler (revision 2, 3 and 4) on all known PDF-versions. - Supports cracking both owner and userpasswords. - Both wordlists and bruteforcing the password are supported. - Simple permutations (currently only trying first character as Upper Case). - Save and load a running job. - Simple benchmarking. - Optimised search for owner-password when user-password is known. . This program can be used in forensics investigations or similar activities, to legal password crack.
Homepage: http://pdfcrack.sf.net
Version: 0.16-1
Section: universe/utils