Hacking PDF’s are made to seem hard by all the windows programs a search for “PDF Crack Password” returns. In our case, we’re going to use 2 simple commands to convert a protected pdf into an unprotected pdf.
Here we go, In a terminal session type:
$ pdftops protected.pdf out.ps
$ pstopdf out.ps out.pdf
That’s it! If you dont have pstopdf installed on your ubuntu you can type “sudo apt-get install context” and solve that easy problem.





