Astro File Manager allows you to create custom shortcuts to files. I don't think it works with Touchwiz, but it should work in any launcher that allows you to add shortcuts. Just install Astro, long-tap on an open home screen, choose "Shortcut" from the Add to Home Screen list, choose Astro, navigate to the desired file and tap it. Shortcut to file is now added to your homescreen. I can confirm this works on Nova Prime launcher.