PassRec PDF Password Recovery is a Windows-based application that features encrypted/password-protected WinPDF files crack without knowing the password. With three different password recovery methods, PassRec enables users to recovery password from locked PDF documents, whatever the password lengths, character/symbol combination, and how complicated it is. But depending on the complicity of the password, the time needed to complete the recovery process varies.

Below are the three password attacking methods:

Dictionary Attack: search for password from inbuilt or customized dictionaries.

Brute-force Attack: find passwords within the ranges and lengths you set.

Brute-force with Mask Attack: Attempt every possible number or letter, which may be time-consuming.