Modern Day: A Dragon Scours the Land

[noob]

if this is an alien stuff made of high technology
1:There is absolutely no reason for it to look vaguely like a dragon as it is a completely under optimal form who have no use.
2: "Its senses along with its profound understanding and control of physical laws give it what appears to be supernatural abilities. "Force field" generation, weather control, etc."
is just an stupid idea there is no reason it would do those things it would rather just create an antimatter explosion for destroying the entire earth and other kind of simple and efficient use of technology since generally with superior technology you have superior firepower and that doing weather control is not something you put on standard issue machines.
3:Dark matter is just a theory for explaining a phenomenon with gravitic influence and there is alternative theories working without dark matter like many alternate gravitation theories
4:Dark matter is not necessarily more resistant than other matters and anyway the problem is that our explosives are so strong that it would need to be super ultra dense and heavy for resisting and your dragon would end up being crazily heavy if it can face-tank a nuclear bomb so much that in fact its gravitic influence might be felt when you are at some meters and that it would end up collecting dust and dirt and rock around it.