Not even sure you can make a shortcut to it let alone save the entire file there. Best I can imagine is creating a shortcut to the folder in which said document is stored.
You can create a shortcut with ES File Explorer. Select the file, long-press on it, then select "Shortcut". It will create a shortcut on your home screen.
You can create a shortcut with ES File Explorer. Select the file, long-press on it, then select "Shortcut". It will create a shortcut on your home screen.