It is a bruteforce dictionary at a protected pdf.
wordlist.txt is the dictionary file and you can edit the file.
The file location a name is input to the python program.
You can easily crack the pdf file by using the tool.
What is a dictionary attack?
A dictionary attack is a method of breaking into a password-protected computer, network or other IT resource by systematically entering every word in a dictionary as a password. A dictionary attack can also be used in an attempt to find the key necessary to decrypt an encrypted message or document.
Dictionary attacks work because many computer users and businesses insist on using ordinary words as passwords. These attacks are usually unsuccessful against systems using multiple-word passwords and are also often unsuccessful against passwords made up of uppercase and lowercase letters and numbers in random combinations.