document searching not website searching

I am looking for a plugin that could only search pdfs hosted on the site not for posts or pages. Idealy it would be a single field to search for the name of the document and it would display a list of pdfs, not the pages that mention the document. I am having a hard time finding anything like that.
I had thought to use a table plug in with built in search but the client doesn’t want it and there is not any other information to display besides the name of the document.