From 4dots Software:
With Free PDF Password Remover 4dots you can batch unlock PDF documents and remove PDF passwords and restrictions from them. It is absolutely free, very easy to use and also multilingual. You can remove unknown owner passwords used for setting restrictions on printing, editing, copying, form filling, commenting, page extraction and others and known user passwords. You can unlock PDF documents and remove PDF passwords, simply with a right click in Windows Explorer, since Free PDF Password Remover 4dots can be integrated into Windows Explorer. Also, you can just drag and drop PDF documents to be unlocked to the main window of the application. The application does NOT need Adobe Acrobat software installed. All versions of PDF documents and encryption types are supported. The application is multilingual translated into 38 languages.
January 27, 2017
Version: Free PDF Password Remover 4dots 2.2
Unable to download to tests as windows defender automatically removes it
This download also contains: Trojan: Win32/Spallowz.A!cl
From the Microsoft website: (link below, but if link not allowed here is a summary)
Windows Defender detects and removes this threat.
Trojans are a type of malware that try to look innocent to convince you to install them on your PC.
They can steal your personal information, download more malware, or give a malicious hacker access to your PC.