I do not believe the poster is real. It looks awful. Threepio with a gun? Meme alien face? Horrible backdrop? No thank you please.
Oh no, it’s 100% real, but this is definitely more of a Walmart promo poster than anything else. It’s absolutely not a theatrical one-sheet or anything like that.
JEDIT: Like this one for TFA (though it’s significantly better than the leaked IX one):