PDF password is a tool to decrypt lost passwords to password-protected PDF files (*.pdf). PDF password decrypts user and permission passwords only. PDF password does not allow to decrypt DRM (Digital Right Management) system. If user password is either not set or known, it is possible to remove a permission password instantly. Unfortunately, if a user password is unknown, there is no easy way to recover the password to a PDF document. Universal recovery methods, such as Brute Force Attack and Dictionary Search, must be used. Due to a nature of an encryption method used in PDF files, the password search is very slow. The recovery methods used by PDF password: Brute Force Attack, Dictionary Attack, Smart Force Attack, password Variation, Reset password (only if user password is either not set or known).