160m pirate?

Overnight I was again on 160m FT8 RX. In all, 7 North Americans spotted as well as tons of Europeans. Supposedly, I copied D7XY (8876km) in South Korea, although the fact he was widely spotted in Europe, but not in Japan or other places in East Asia, makes me highly suspicious. I think this is a pirate. If not, this was my best DX last night. Otherwise KI5BLU (7656km) in Texas is the best DX spotted on 160m FT8 RX overnight.