PDFCRACK

DICTIONARY ATTACK

root@oco:~$ file {filename.ext}
 ...
root@oco:~$ pdfcrack -f flag.pdf -w /usr/share/wordlists/rockyou.txt 
 PDF version 1.7
 Security Handler: Standard
 V: 2
 R: 3
 P: -1060
 Length: 128
 Encrypted Metadata: True
 FileID: 3792b9a3671ef54bbfef57c6fe61ce5d
 U: c46529c06b0ee2bab7338e9448d37c3200000000000000000000000000000000
 O: 95d0ad7c11b1e7b3804b18a082dda96b4670584d0044ded849950243a8a367ff
 Average Speed: 29538.5 w/s. Current Word: 's8t8a8r8'
 Average Speed: 31068.0 w/s. Current Word: 'toby344'
 Average Speed: 30443.7 w/s. Current Word: 'erikowa'
 Average Speed: 29519.3 w/s. Current Word: '0848845800'
 Average Speed: 29676.4 w/s. Current Word: 'u3904041'
 Average Speed: 29339.8 w/s. Current Word: 'spider0187'
 Average Speed: 30156.8 w/s. Current Word: 'roermond7'
 Average Speed: 30364.8 w/s. Current Word: 'papaopass2'
 found user-password: 'XXXXXXXXXX'