Using Internet Explorer and a virtual PDF generator to print a PDF filefrom a HTML page causes the document s entire storage path, for examplefile://C:UsersdabDownloadsdocument.pdf, to be stored in the document itself. The H Security team uses Internet Explorer to print PDF files from HTML pages to print them from the page of the page. The team also uses the Internet Explorer tool to print files from the HTML page of an HTML page to create a PDF.
Source: https://threatpost.com/pdfs-ie8-can-disclose-user-path-info-112509/73164/