How do I scrape an Acrobat file in PHP?

[mtrac]

Just what the title says. I want to scrape information from a PDF and put it in VBulletin3.

I've done this extensively in Windows with Visual Basic for Applications and the library that comes with the full version of Acrobat. Now I want to do the same thing for my BBS. So, is there a library available for PHP? Preferably one priced for a hobbyist who needs to scrape one file once a week. Thanks.