Spectrocoin is a custodial platform, so it's more of an exchange than an actual personal wallet. And yes, sadly this type of behavior is very often done by centralized services and exchanges.
The problem is that there's is no way to confirm whether Spectrocoin is indeed interested in knowing the origin of the funds, or they're just selectively scamming their users. But like you said, the amount is very low, I suspect that they found something suspicious about the transaction which is not surprising, YoBit never had a good reputation.