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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.
10 Μαΐ 2020 · Objective: Recover the password, decrypt the PDF, and retrieve the flag! If the dictionary attack does not work, then the Password Policy could be: Password length is less than 6 characters i.e. 0 < length < 6
pdfrip is a fast multithreaded PDF password cracking utility written in Rust with support for wordlist-based dictionary attacks, date, number range, and alphanumeric brute-forcing, and a custom query builder for password formats.
8 Σεπ 2020 · Features. Supports the standard security handler (revision 2, 3 and 4) on all known PDF-versions. Supports cracking both owner and user passwords. Both wordlists and brute forcing the password is supported.
pdfcrack-ng is a simple tool written in C to recover forgotten passwords from PDFs. It should be able to handle all PDFs that uses the standard security handler but the PDF-parsing routines are a bit hacky.
5 Μαΐ 2019 · Carlos Delgado. May 05, 2019. 199.3K views. Learn how to crack a protected PDF with brute force using John The Ripper, the fast password cracker in Kali Linux. John the Ripper is a fast password cracker, currently available for many flavors of Unix, macOS, Windows, DOS, BeOS, and OpenVMS (the latter requires a contributed patch).
23 Ιουλ 2021 · Do you have a PDF document lying around somewhere, but it's encrypted and you've forgotten the password to it? hashcat is a great open-source hash cracker with GPU acceleration. It also comes with features such as masking, dictionary attacks and even statistical methods of password guessing.
