Something a bit different here; refracted sunlight. A paraselanae or 'moon dog' is the result of sunlight, reflected from the near full moon in this case then being refracted through heaxgonal prism shaped ice crystals high in the atmosphere. The left moon dog is very pronounced, but there are also hints of the 22 degree halo, upper tangent arc and possibly moon pillar. It fits in very nicely with the simulation on halosim.