Yes there is a way of checking if it's the geniune thing or not...
bitzi web lookup will do this for you...Click on link on how to use it...
http://www.gnutellaforums.com/open-discussion-topics/37676-how-use-bitzi-web-lookup-how-use-magnet-links-direct-connect-browse-chat.html
Also can you just edit out the company name of the file as we are not allowed to mention them due to copyright laws....