Hi Steven Winderlich,
Because the main domain is online, but not that particular sub-domain: nitkiozz dot hotbox dot ru.htm
It's not just you! htxp://nitkiozz.hotbox.ru.htm looks down from here.
So if that is the situation, no longer online, how would avast! add detection then.
They were simply too late, the other 10 were in time to add protection.
polonus