Yeah, however disguise DC was 10 but it does not allow see through clothing/masks, so you can only tell the creatures are disguised for some reason to cover their appearance. You can tell they are small humanoids with unusual movement and bloated bodies and they are clearly not used to wearing clothes at all. Also know they have sharp claws hidden by gloves (sort of claws which allow tear flesh but they do not use them). In short if someone had failed perception DC 10 would think attackers as goblins.