How can I ask Adobe to turn down a file that has been uploaded illegally to Acrobat?

I work for an editorial and we found out that one of our books has been uploaded to Adobe Acrobat publicly for everyone to see. The thing is that the book has not even been printed. The book has copyright and we want to ask Adobe to start a process to turn down that file from the app. Also we can't see who uploaded the book, but at least we are interested in the book to be no more available. Any help, please?