49 lines
2.0 KiB
Plaintext
49 lines
2.0 KiB
Plaintext
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Code and documentation are copyright 2006-2008 Henning Norén
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Parts of pdfcrack.c and md5.c is derived/copied/inspired from
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xpdf/poppler and are copyright 1995-2006 Glyph & Cog, LLC.
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The PDF data structures, operators, and specification are
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copyright 1985-2006 Adobe Systems Inc.
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Project page: http://sourceforge.net/projects/pdfcrack/
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pdfcrack is a simple tool for recovering passwords from pdf-documents.
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It should be able to handle all pdfs that uses the standard security handler
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but the pdf-parsing routines are a bit of a quick hack so you might stumble
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across some pdfs where the parser needs to be fixed to handle.
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Type 'make' (or 'gmake' if you have BSD-make as default) to build the program.
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You will need to have GNU Make and a recent version of GCC installed but there
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are no external dependencies on libraries.
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You will have to add the -march-switch in the CFLAGS-option in Makefile
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for best optimization on your platform. Look into the GCC-manual
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(http://gcc.gnu.org/onlinedocs/) if you are unsure.
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The program is distributed under GPL version 2 (or later).
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Features available in this release (check TODO for features that might come):
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* Both owner- and user-passwords with the Standard Security Handler, rev 2 & 3.
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* Search by wordlist
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* Search by bruteforcing with specific charset
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* Optimized search for owner-password when user-password is known (or empty)
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* Extremely simple permutations of passwords (makes first letter uppercase)
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- currently only useful for bruteforcing with charsets:
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* Auto-save when interrupted (Ctrl-C or send SIGINT to the process)
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* Loading saved state
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- currently only for bruteforcing with charsets:
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* Minimum length of password to start at
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* Maximum length of password to try
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Sort your wordlist by length for best performance and consider that almost
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all passwords in PDFs are in iso latin 1 so use the correct character encoding
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in your terminal and/or wordlist when using special characters.
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This tool can not decrypt a Password Protected PDF.
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Look up the pdftk toolkit which can do that, when you know the password.
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