When PDF's are indexed I was see the copyright info as the search title; Is it possible to change this behavior or change all pdf content to have a generic title?
When indexing PDF's you will either get the Title from the PDF document itself or, if it's not obtainable, you will get a generic title of "PDF Document". Apparently your PDF documents have copyrights for titles.
You have several options. Use actual titles for title in the PDF documents. Do an update (using SQL) of the Titles for PDF documents in the html table after the walk is complete. Or write a wrapper for the pdf plugin to remove "-mTitle" from the environment variable ANYTOTX_OPTS .