It's probably a pure CG like Vexor said, because his type of propulsion seems so unusual, in more you see no IR sytems on it and no real label on the craft.
Nevertheless, in the field of the UAV all is possible now, there are so many Aircraft company around the globe which experiments and markets new strange drones. For example, here in Québec, Bombardier built the CL-327 Guardian. :new-alien: