Did you forget the password for a PDF with a password? pdfcrack may do something about it

Note: Abuse is a forbidden command.

The PDF I received before had a password, but I just can't remember the password. Maybe it was 4 digits, but ... I had the opportunity to use pdfcrack to find the password by instant killing.

pdfcrack -f hoge.pdf -n 4 -m 4 -c0123456789

-n: minimum password length -m: maximum password length -c: char set

reference

http://manpages.ubuntu.com/manpages/trusty/man1/pdfcrack.1.html

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