PDF Password Remover can be used to decrypt protected Adobe Acrobat PDF files, which have "owner" password set.

Features: PDF Password Remover can be used to decrypt protected Adobe Acrobat PDF files. The standard security provided by PDF consists of two different methods and two different passwords, `user password` and `owner password`. A PDF document may be protected by password for opening the document or the user password. When creating the document a owner, with his password can specify what the user can or cannot do with the document. He can specify operations that should be restricted such as printing; copying text and graphics out of the document; modifying the document; and adding or modifying text notes and AcroForm fields. The files are encrypted to prevent unauthorized access to the document other than the owner. The owner password access allows the owner to set various restrictions to prevent unauthorized copyright violations. Decrypted file can be opened in any PDF viewer including the Adobe PDF reader and all the restrictions are removed. That is the edit/copy/print functions become enabled. All versions of Adobe Acrobat that let these kind of restrictions to be imposed are supported. This program cannot, however, decrypt PDF files protected with user passwords.

PDF Password Remover can decrypt PDF files encrypted with standard encryption handlers only. It supports PDF 1.6 or the Acrobat 7.x files, including 40-bit RC4 decryption, 128-bit RC4 decryption, AES decryption, compressed files and unencrypted metadata. It can remove Adobe Standard 40-bit Encryption, Adobe Advanced 128-bit Encryption and AES Encryption; documents protected with any other encryption handlers (like FileOpen, SASS_INTERNET_STDS from Standards Australia Software Services, or SoftLock`s Acrobat Security Plug-Ins cannot be decrypted. PDF Password Remover supports batch operation from command line.

Overall: A good utility but the utility seems to be aimed at helping you violate copyright!