That poster is one of (albeit the most creepy and sexist) a group of parody posters made by fans of the MCU. Other such fan posters include this equally abhorrent creation:
And my personal favorite:
The only official posters released by Marvel are the ones depicting Iron Man, Captain America, and Thor.
There’s a post rolling around attempting to blame Marvel Entertainment for the fan-made posters, calling them sexist and worse. Marvel does have trouble with representation in their works, but even they wouldn’t make a mistake this large. Spread the word!
I am Silver Tongue, I am an artist. I have many characters and you can check out my art in the art tag. I occasionally practice witchcraft though I don't do anything too complicated. I am girl 2 and don't know what else to put here.