Prima guide pdf password crack (encryption key crack)

If anyone has trouble with the awful Prima PDF reader (it’s incredibly slow), just locate the PDF file from the program files entry of the guide. It is open-password protected. Fortunately, for now they use 40-bit encryption, which is no problem for
“Advanced PDF Password Recovery v5 0 Pro DOA rar”
Pass key found in ~12 hours of processing on my PC. Enterprise version of the soft could do it in some minutes, ElcomSoft claims.

Btw. – the developers/sellers of the password recovery programs maybe should rethink their selling model. Now they try to sell a program that does crack passwords, for a relatively high price (price range 49eur – 399eur for this particular product). As most users (like myself) need to crack just 1 document, or some documents at most, it would be nice to have an option that cracks a password/key for a given document, for a smaller price (5 euros or so). I mean they can now use cloud computing solutions like Amazon EC2
The only problem with the model is that password protected documents are usually sensitive – which was not the case here.

5 replies on “Prima guide pdf password crack (encryption key crack)”


Can you please advise what initial prameters for the password were you using?
Have you used latin and digits or special symbols and spaces as well?
What was the actual length of the password in the end?

Thank you in advance.

That model – pay for password instead of software are allready used for some products. Used it once to crack Windows XP password. Also – cracking with your video card gives you like 1000-1000000 times speed improvement depending what you are hacking 🙂 MD5 with length of 8 can be cracked in like 2-3 minutes if using just 1 video card – tried myself.

and btw, what was the password? Was something really random (like number and letters, e.g. ESJ828SU828394MMAL) or something like PRIMAGAMESEGUIDE?

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