How is this possible

[Urt1]

So recently I got a Greninja in a cherish ball with protein ability with a special ribbon and faithful encounter tag. But it also was obtained in march of this year. I put it in and out of Pokebank with no problem at all. It's ev's are normal as well. It had normal looking moves. How is this actually possible. 

[Poke J]

17 minutes ago, Urt1 said:

So recently I got a Greninja in a cherish ball with protein ability with a special ribbon and faithful encounter tag. But it also was obtained in march of this year. I put it in and out of Pokebank with no problem at all. It's ev's are normal as well. It had normal looking moves. How is this actually possible. 

It’s hacked. Online hack checks are terrible and should never be used to determine legality.