I get the feeling, this is just a Photoshop/Edited picture by someone who did not publish it with his name to begin with.
There are a lot of depictions very similar to the one you posted.
On this ufo sightings page for example, we see roughly the same picture with a different colouring.
This one is the same picture, only darker.
And right here, we have another version of what appears to be a lower resolution picture, with credits to Pinterest.
The Pinterest tip leads to this user (Pinterest account may or may not be neccessary to view).
The Pinterest post cites thatsclassified.com as source. Finding the picture on this site, or even articles about the hollow-moon theory is extremely difficult, most articles are archived already as it seems.
I hope this at least helps you find your way to the author a little faster.