In that picture all I see is GSD. I the color throwing you? Well, there are GSDs with that color. Is that ear flop throwing you? Well, that is not uncommon either. In fact, at this point, I would probably help that ear stand.
Without a picture of the dog standing, it is really impossible to get a good idea if the dog is a mixture or not, or what type of mixture it may be.
Nothing in that photo screams Malinois to me. It looks like a lot of GSDs I have seen.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC