this is my opinion.. and I am not an authority on these.. just like everyone else on here.. I used to take photography... and used to get these on some photos even in indirect sunlight, as the brightness of the sky can distort on the lens, even without flash...
If you notice the shape of the light, is very similar to that of the areas I high lights in the photo, and light distortions do just that, distort some. I am not picking your photo apart by highlight these areas but merely to show you why, I think what I think, and is by no means the only answer
It is possible this photo can be something, but I've got a nagging voice in my head saying this isnt paranormal, but as I've stated in lots of photos.. if I cannot see it with my eyes as a light source.. I generally ignore when I take photos of the like, but then again I may do so too easily.
There is something about this guys eyes though.. and his pose.. that make the photo hard to look at.