In the Security tab of the Document Properties dialog box, choose Document Security > Password Protection, and then click Change Settings 3. Choose Protect > Secure Document > Security Properties, or choose File > Properties. Here I’m attaching a youtube video of Patrick on how to use Pdfcrack, you can watch this video and get an idea of how to crack pdf passwords using Linux. How to modify password and security settings 1. Both of these tools work on the same principle which is either you can use your dictionary to crack the password or you can use the brute-force method to crack the pdf password. The most popular tool to crack pdf password on Linux is Pdfcrack and John the Ripper. If you are on Linux operating system whether it is Kali Linux or any other Linux distribution, there are many automated tools are available for you to crack the pdf password. There are many automated tools available on the internet which you can use to crack pdf passwords these tools use a very common type of technique to crack passwords which are dictionary attack & brute-force attack. But if you want to crack a pdf password then there is the only way to crack it with automated tools. Till now I’ve told you many things about pdf documents and how you can make your pdf document secure.

So, if you know the password and you want to permanently remove the password from the pdf document you can use these online tools. These tools don’t crack the password they only remove the password from the pdf document if you know the password.

There are some online websites are available that you can use to crack pdf passwords. Protect PDF Document with Password Crack PDF Password Online

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