PDF Password Protect FreeScreenshot 

 

This small free utility allows you to set protection to PDF documents. Especially it is useful in cases where there are no computer tools to work with pdf files. The program allows you to set passwords on the pdf document of two types: a user password and owner password. User password restricts access to a pdf file as a whole. Owner Password prohibits the manipulation of the individual document, for example, it can be to protect pdf from copying

Screenshot of PDF Password Protect Free