Advanced PDF Password Recovery Pro

Advanced PDF Password Recovery Pro is a program that helps you decrypt protected Adobe Acrobat PDF files that have user and/or owner passwords set, preventing the file from opening or editing, printing, selecting text and graphics etc.If only owner password is set, password recovery is not needed at all, but the file is being decrypted instantly (so all restrictions are being removed).

User password can be recovered using brute-force and dictionary attacks; also, the program supports key attack that allows to decrypt PDF 1.3 (Acrobat 4.x) files regardless the password length, guaranteed - that takes only 4-5 days on modern dual-CPU systems.

Advanced PDF Password Recovery Pro doesn't work with documents which have user-level passwords (preventing the files from being opened), if both user and owner passwords are unknown; and PDF files protected with any 3rd party security plug-ins.

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 resonable time with these attacks).

In addition, Advanced PDF Password Recovery Pro has Key search attack, which guarantees the decryption of PDF 1.3 files (Acrobat 4.x or older) regardless the password length, by trying all possible 40-bit encryption keys (it takes about 3-4 days on modern dual-CPU systems).