I have a pdf file that I am putting on a website for a client. It is located here...
http://www.optiphysicaltherapy.com/dev/wp-content/uploads/2014/02/OPTI_NewPatientForms.p
Open File > Properties, then in the box labeled 'Title', add your title.
Click on the 'Initial View' tab, where it says Show:, make sure the drop down says 'Document Title' instead of 'File Name'. This works for Chrome, but sadly not IE yet.