do some research on the pentatonic scale. it's an intelligent abstraction encoded in the placement of holes on this object.

if one were to randomly put four holes in a bone of the same size, the chances that they would produce a pentatonic scale are pretty rare.

if this were found in a human settlement, no one would bat an eye: the pentatonic scale has appeared in almost every human culture.

with that in mind, this object is far more likely to have been created by an intelligent being than to have been composed of random punctures.