How I add color/texture to this obj.file?

I donwloaded this STL model https://www.psdly.to/chucky-bishoujo-3d-print-model but my 3d max 2012 always crashed when I tried to imported it so I used MeshLab to convert this file from STL to OBJ and it worked, but now when I try to drop a png texture on this 3D model nothing happens(the model just changes to a slighty color white)