Totalitarian. The specific flavor is Juche. It started as an ostensible offshoot of Marxist-Leninist ideology, and then became whatever the ruling family wanted it to become as time went on. By now, its essentially just a cult of personality/deification ideology around Kim jong un.
North Korea is absolutely not socialist or communist in any meaningful sense.
They claim to be communist in some cases. Socialist is also a sort of blanket term which “means something” which - is somehow different from what others know it as. And “liberal” is an insult, so. They’re very confident they’re “left” of all creation, and any real-world effort to help people through existing national political structures is obviously corrupt and unworthy of examination.