I have a massive database of pdf files that I would like to import through a feed, targeting only pdf files that contain the words "gold coins" in the body of the pdf file. I have looked at things such as yahoo pipes, but the titles are generic such as 11011.pdf with no description. Is this possible through feeds?

I apologize in advance if this question is stupid. I can't quite figure a way to do it though, so I figured I would ask.

William