Technically, the GPL allows one to sell Blender (even though the source code still has to be obtainable for free).
What is hilarious is the advertisement of a serial key for a free program that does not have such a thing (that is unless this company created a patch that adds a key input). The best you can do for now is to inform the people looking at this about the BF, where they can get the exact same app. without tricks.
The problem is, they could be tricking people to download an infected build … If you are getting all your information about how awesome blender is from YouTube, you may end up thinking that this is a commercial software, and then see this ad, and instead of going to blender.org you will go to them…
Does this build include Optix? If yes, they may actually infringe the GPL - they have to provide all sources, and that includes the OptiX headers. But these they can´t (legally) provide, as they are not redistributable.
Guess i’m the only one that actually looked what it was, “that build” doesn’t even include “blender”… it’s just straight up malware ( MSIL/Kryptik.AFZX )