Add Copy as PDF Shortcut in Mathematica

To add a shortcut for the Menu Item Copy as PDF you have to do the following (with a Mac) go to

and edit the file
changing the line
MenuItem["PDF", FrontEnd`CopySpecial["PDF"]],
MenuItem["PDF", FrontEnd`CopySpecial["PDF"], MenuKey["C", Modifiers->{"Command", "Option"}]],
In this way Command + Option + C will copy the object as a PDF in the clipboard.