Welcome to MobileRead, sthapit!
Unfortunately, simple dave is quite right (I mean that it's unfortunate that it's the way it is, not that he's right about it

), PDF files are kind of a dead end when it comes to extracting the content. There are a number of
utilities around that approach it from various directions, with varying results.
However, a DRMed PDF isn't just a dead end, it's like a blind alley with a padlocked iron gate at the entrance and an underfed 110 pound rottweiler inside: you ain't gettin' nuthin' out of there, except by their sufferance.