|Don't take this the wrong way, but since we really don't know that it is your document, we can't help.|
The rules of this forum, as stated here, don't allow for the posting of hacks or password cracking schemes. This is done to protect the intellectual property of others.
Someday you may have a document that you want password protected. How happy would you be if a cracking scheme was widely published in Help Forums such as this one?