Little background here (I'm French and grew up in Paris):

MacDonald's branding in France are really different in France than it is in the US, especially in Paris. Food is quite tasty, meat is fairly good, and even the colors are different: the flashy red/yellow has been replaced by a classy green/black two years ago.

And this specific MacDonald's is one of the biggest and best located in Paris (Champs Elysées)

Money laundering may have been a plausible explanation for a random US MacDonald's, it's really far fetched for this one.