I’m pretty sure those are 1095 HC so if there’s any bare sections it will start to rust. You should be able to rub if off with a little oil. As a matter of fact, you’d think there would have been some on the blade to keep rust from happening. Anyways, it’s totally to your discretion. Contact the seller and let them know. They may want it sent back and send you a replacement, so is d that first before you attempt to clean it. They may appreciate you letting them know. Could be a storage issue.
On the other hand, put some WD40 on and rag and clean it off without slicing your hand off.
First, a knife shouldn’t come with ANY rust from a dealer BUT that is not a lot of rust. That’s a tiny amount of rust and it’s only on the surface.
That’s high carbon steel. It’ll rust. Go use it or use oil and rag and be safe. That or try Flitz. Sharpening will work too.
Thats hardly a lot of rust. Still looks new to me probably just a little humid wherever they are stored. I don’t have a current pic but I stripped the coating off my 4 and did a forced patina with mustard.