This program (Advanced PDF Password Recovery, or simply APDFPR) can be used to decrypt protected Adobe Acrobat PDF files, which have "owner" password set, preventing the file from editing (changing), printing, selecting text and graphics (and copying them into the Clipboard), or adding/changing annotations and form fields (in any combination). Decryption is being done instantly. Decrypted file can be opened in any PDF viewer (e.g. Adobe Acrobat Reader) without any restrictions - i.e. with edit/copy/print/annotate functions enabled. The program is also able to convert Kinko's Document Format (KDF) files to PDF files (without any protection).
Please note that APDFPR does not work with documents which have user-level passwords (preventing the files from being opened), if both user and owner passwords are unknown.
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, 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). |
