Quote from: jonjon2 on July 06, 2012, 06:22 amAn external application is needed to handle:http://***********.onion/*****/****************.pdfNOTE: External applications are NOT Tor safe by default and can unmask you!This is one of the reasons why people need to be careful with PDFs and some other files. That kind of thing is essentially reporting back to the site it rfers to that you are opening it. Tracking you, basically.A VM is a virtual machine.