Comments on: Howto Crack pdf File Password

By: Satbir

Satbir — Fri, 23 Dec 2011 18:25:20 +0000

does it check special characters??? I don’t think it does….

By: Josh Wheeler

Josh Wheeler — Fri, 16 Dec 2011 10:29:31 +0000

I got the same message. Were you able to figure it out?

By: Andy

Andy — Thu, 13 Oct 2011 02:47:54 +0000

Output: The specific version is not supported (Adobe.APS - 65537)

By: brady

brady — Tue, 23 Aug 2011 19:02:06 +0000

I get this error

The specific version is not supported (EBX_HANDLER - 0)

By: stasik

stasik — Mon, 10 Jan 2011 18:51:56 +0000

super, worked for me. found a 4 digit password in less than a second.
i got
found user-password: ’5525′

By: Guido

Guido — Tue, 09 Mar 2010 20:32:47 +0000

What should i do if i have the first 4 chars of the password but i can’t remaind the last 3 or 4 chars???

By: Joshua McGee

Joshua McGee — Tue, 15 Dec 2009 03:41:16 +0000

I get: Encrypted Metadata: True ... found user-password: ''

Does this mean that pdfcrack can’t handle the encryption or … that … somehow it’s encrypted with a blank password? :-/

By: f

Thu, 23 Jul 2009 14:51:02 +0000

You can use kpdf (linux) and in settings uncheck “obey DRM limitations”. I’ve used to print password protected pdf.

By: Raj

Raj — Thu, 04 Jun 2009 19:59:51 +0000

Everything worked for me(printing the passwords). I got a lot of passwords and none of them were working. I don’t know where it went wrong.

By: HARI SARYONO

HARI SARYONO — Fri, 30 Jan 2009 01:45:01 +0000

I am thinking bypassing password routine in pdf reader program, so we don’t need guessing program. In my experience, guessing program always take very very very long time. It was work for weak password, but still, i just need time to install program compared with waiting days to arrive at single word.

By: jeff

jeff — Wed, 19 Nov 2008 09:32:25 +0000

btw, I used pdfcrack under WinXP, and tried it on an alternatively encrypted pdf file.
A certificate file (.pfx) was installed before I could open it in Acrobat Reader 7.0.
So the conclusion is, pdfcrack may not be able to handle such encryption for now.

By: jeff

jeff — Wed, 19 Nov 2008 09:27:08 +0000

I got the same error msg: “Error: First trailer not found”
Following snippet of code might give some insight into this:

http://pdfcrack.sourcearchive.com/documentation/0.9/main_8c-source.html
…
00251 ret = getEncryptedInfo(file, e);
00252 if(ret) {
00253 if(ret == EENCNF)
00254 fprintf(stderr, “Error: Could not extract encryption information\n”);
00255 else if(ret == ETRANF)
00256 fprintf(stderr, “Error: First trailer not found\n”);
…

By: ganesh

ganesh — Mon, 27 Oct 2008 05:06:26 +0000

Can any body help me seeing a password protected file using ImageMagick. I tried; it didnt work. Can somebody give me a link from where to install.

By: ganesh

ganesh — Mon, 27 Oct 2008 05:05:04 +0000

Hi,
Can any body help me seeing a password protected file using ImageMagick. I tried; it didnt work. Can somebody give me a link from where to install.

Many thanks,

By: stan

stan — Sat, 26 Jul 2008 18:57:40 +0000

I guess that’s what all that processor power in a home pc is for…

By: robinzoni

robinzoni — Sun, 13 Jul 2008 13:01:50 +0000

@ Asbjørn
Many thanks for your Tip. It did, indeed, work for me. Imagemagick solved the problem astonishingly simple.

Best.

ps: Just for the record. I assume the success does depend on the encryption method, though. Since I could ‘see’ the content of my pdf’s but was not allowed to manipulate them (extract particular pages, copy text, etc.) it worked like a charm.

By: iansane

iansane — Sun, 13 Jul 2008 02:40:09 +0000

any options for adobe digital additions downloads? pdfcrack and imagemagick convert produce error: unknown security handler.

Anyone know how to convert those into regular pdf’s? even after purchaceing them they can only be read on an authorised machine with digital additions. Try to open them like a regular pdf and they are password protected

By: micheas

micheas — Fri, 04 Jul 2008 11:13:10 +0000

using a dictionary from The Argon Word Lists will tend to get much faster results.

By: thx

thx — Mon, 16 Jun 2008 05:38:54 +0000

luv u 4 this!

By: Asbjørn

Asbjørn — Tue, 15 Apr 2008 09:08:10 +0000

Hi.

I was once told that one may omit the PDF password functionality by simply using ImageMagick (‘convert pdf_with_password.pdf pdf_without_password.pdf’). This won’t find the password for you, but will help you read the PDF.