Pervushin lagged behind the leader by 31.3 seconds, although he did not make a single mistake.
The victory was won by Frenchman Emilien Claude with a score of 23 minutes 16.1 seconds.
The second place was taken by the Czech Mikulas Karlik (+26.1).
Earlier it was reported that Em Baserga won the women's sprint at the junior biathlon world championship.