I have a PDF which is password-protected (40-bit RC4), which I need to modify. Needless to say, I don't know the password.
I'm looking for a software which can either unprotect such PDF documents, or edit them regardless of the protection. Additional requirements:
- edited PDF should have a reasonable size (i.e. I can print to TIFF and edit at will, but I hope for a better option)
- software should operate offline (the PDF contains sensitive information and cannot be uploaded to online service)
- parts of the PDF which I didn't edit should remain unchanged when printed.
- Linux support is preferred, but Windows is fine too.
Use case: providing a bank statement for the expense report, while removing lines I don't want to share with my employer (like online banking access code).