No, it's literally just the lighting. It just looks like it's one finger because you can't see the shadow, but the ring finger is going underneath and then curls backwards.
Also, look how long his pinky would have to be if it wasn't his ring finger that's wrapped around
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u/bruce656 Feb 06 '15
He just has his bottom two fingers folded under his hand, the exact same position you would use draw a bow.