if reading up on the drum doesn't help you figure out what kind of wood you have theres one fool proof way of figuring out what kind of wood it is. Sand the paint off to its bare wood (it'll make the dhol sound better anyways so you might as well) and compare it to pictures of other dhols. You're going to need to oil it with mustard oil to get the right shade though.
Also, if you got the drum for very cheap... chances are its made of plywood. My first dhol (i still sometimes use it) was literally 100 bucks online and it was a plywood shell with 10,000 cracks and dents all filled in with some sort of masala paste, and painted over with at least 8 coats of paint. luckily it wasn't a Frankenstein dhol but i know alot of dhols that are put together using two pieces of broken dhols. So be careful before you sand down the paint, it might be the only thing other then some cheap glue holding it together.