PDF Password Cracker Pro 3.0

PDF Password Cracker Professional edition also allows to search for "owner" and "user" passwords with brute-force and dictionary attacks, effectively optimized for speed (however, don't expect to recover long passwords in a reasonable time with these attacks). In addition, it has Key search attack, which guarantees the decryption (regardless the password length and complexity) of PDF files that use 40-bit encryption (the attack takes about 3-4 days on modern dual-CPU systems).

Key Features
Support PDF 1.7 (Acrobat 8.x) files, including 40-bit RC4 decryption, 128-bit RC4 decryption, AES decryption, compressed files and unencrypted metadata
Recovers user password required to open the file
Brute-Force, or Dictionary attacks are used to recover the password Additional user dictionaries support, case changes, multiple mistypes and other modifications for each dictionary word
Program automatically saves password search state and can resume after a stop or a crash
bullet Patterns can be used to minimize search time if any part of the password is known
Non-English characters in passwords are supported

Code:

http://uploading.com/files/D4SAU70F/Homework_PDF.rar.html