I recieved a Darkrai from GTS ( no trade ). I checked its moveset and it said:
I`m positive this is a glitch Pokemon, but just to make sure- is this Pokemon glitched?
There have been 6 events giving away a Darkrai with those exact moves:
The Rise of Darkrai
Toys R Us Darkrai
Nintendo World Store Darkrai
European Alamos Darkrai
Australian Alamos Darkrai
The problem is that it should not be able to trade over the GTS because of the Classic Ribbon it gets from each event, so this one is hacked.
I'm going to have to disagree with the other two answers because that Darkrai maybe an event one. Well the moves fit the description at least. It should be Japanese and have an ID number of 07147.
This is not glitched, it is a real Darkrai, it is hacked, since it can't have those moves
EDIT: I believe Spacial Rend is a special event move. Not sure about roar of time, probably yes. So it may not be hacked.
Hope this helps!