[drc]

I'm near certain it was photo shopped. The colors and contrast appear cartoonish/painterly, as happen when you digitally enhance a photo too much. Though color and contrast enhancement isn't proof there were other types of alterations.

I also agree the shadows appear to go in suspiciously conflicting directions. Though that's tempered by that we don't know what was the lighting situation.

I would not consider this photo proof. Too many issues with the image for it to be considered reliable in and of itself.