pdfrip: fast multithreaded PDF password cracking utility written in Rust

by do son · March 23, 2022

pdfrip

pdfrip is a fast multithreaded PDF password cracking utility written in Rust with support for wordlist-based dictionary attacks, date and number range bruteforcing, and a custom query builder for password formats.

Features

Fast: Performs about 50-100k+ passwords per second utilising full CPU cores.
Custom Query Builder: You can write your own queries like STRING{69-420} with the -q option which would generate a wordlist with the full number range.
Date Bruteforce: You can pass in a year as the input with the -d option which would bruteforce all 365 days of the year in DDMMYYYY format which is a pretty commonly used password format for PDFs.
Number Bruteforce: Just give a number range like 5000-100000 with the -n option and it would bruteforce with the whole range.

Usage

Get a list of all the arguments:

$ pdfrip –help

Start a dictionary attack with a wordlist (-w/–wordlist):

$ pdfrip encrypted.pdf -w rockyou.txt

Bruteforce number ranges for the password (-n/–num-bruteforce):

$ pdfrip encrypted.pdf -n 1000-9999

Bruteforce all dates in a year for the password in DDMMYYYY format (-d/–date-bruteforce):

$ pdfrip encrypted.pdf -d 1999

Build a custom query to generate a wordlist (-q/–custom-query): (useful when you know the password format)

$ pdfrip encrypted.pdf -q ALICE{1000-9999}

$ pdfrip encrypted.pdf -q DOC-ID{0-99}-FILE

Enable preceding zeros for custom queries (-z/–add-preceding-zeros): (which would make {10-5000} to {0010-5000} matching the end range’s digits)