PDF Password Cracker Professional edition 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 fast CPU systems).

Easy to use
Drag and drop PDF files
Do NOT need Adobe Acrobat software
Support Windows 98, ME, NT, 2000, XP and 2003 Systems
Support PDF 1.6 (Acrobat 7.x) files, including 40-bit RC4 decryption, 128-bit RC4 decryption, compressed files and unencrypted metadata
Support Adobe Standard 40-bit Encryption and Adobe Advanced 128-bit Encryption
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
Patterns can be used to minimize search time if any part of the password is known
Non-English characters in passwords are supported

Version: 2011.1105
License: Shareware
Download: PDF Password Crack Pro v. 2011.1105

Overview:
The standard security provided by PDF consists of two different methods and two different passwords. A PDF document may be protected by password for opening (`user` password) and the document may also specify operations that should be restricted even when the document is decrypted: printing; copying text and graphics out of the document; modifying the document; and adding or modifying text notes and AcroForm fields (using `owner` password).

Key Features:
New PDF 1.6 (Acrobat 7.x) files support, including 64bit and 128bit encryption
Confidentiality (you crack your secret files, not someone from cracking service)
All versions through Adobe Acrobat 7.0 are supported
Decrypt PDF files protected with owner passwords
Instantly remove restrictions on copying, printing and other actions with the file
Full install/uninstall support
Support drag and drop PDF files
Do NOT need Adobe Acrobat software
Support Windows 98, ME, NT, 2000, XP, 2003 systems
Support PDF1.6 (Acrobat 7.x) files, including 40-bit RC4 decryption, 128-bit RC4
Decryption, compressed files and unencrypted metadata
Decrypt protected Adobe Acrobat PDF files, removing restrictions on printing, editing, copying

PDF Password Cracker is an utility to remove the security on PDF documents (of course, you should have the right to do it, for example, in case of forgotten user/owner password). Only standard PDF security is supported, neither third-party plug-ins nor e-books. Both protection methods are cracked:
1. Restricted operations on file can be disabled (instantly, any Acrobat version up to 7.x).
2. It also can be used to decrypt files you know password for.
Support PDF1.6 (Acrobat 7.x) files, including 40-bit RC4 decryption, 128-bit RC4
Instantly remove restrictions on copying, printing and other actions with the file
Do NOT need Adobe Acrobat software
Please note that PDF Password Cracker doesn`t work with documents which have user-level passwords user-level passwords.

Version: 2011.1105
License: Shareware
Download: PDF password cracker v. 2011.1105