That is 0647.rar にはDLKeyが設定されています
COMMENT[DLKey] ramen_walk04
DATE17/07/06(Thu),09:24:28
SIZE17.5MB (18370972bytes)
ORGMIMEapplication/octet-stream
ORGNAMEramen_walk04.rar
DLKey:

That's ローダーに戻る