1)   PDF password 10.1.6805
Password recovery tool for Acrobat PDF (*.pdf) files. PDF Password recovers user and permission passwords only. PDF Password does not allow to recover DRM (Digital Right Management) system.
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 2)   PDF password Unlocker 3.9.5.1.01991.01
The standard security provided by PDF consists of two different methods and two different passwords. A PDF document may be protected by password for opening ('user' password) and the document may also specify operations that should be restricted.
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 3)   PDF Password Cracker Ent 3.0
PDF Password Cracker can be used to decrypt protected Adobe Acrobat PDF files, which have "owner" password and "user" password set. It has Key search attack, which guarantees the decryption of PDF files that use 40-bit encryption.
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