That is 0411.pdf にはDLKeyが設定されています
COMMENT[DLKey]
DATE14/04/18(Fri),15:51:09
SIZE8KB (8326bytes)
ORGMIMEapplication/pdf
ORGNAMEprintJikanwari.do;jsessionid=F9E941957D0D21D35606A27F26A14C25.pdf
DLKey:

That's ローダーに戻る