Classifying a malware to a specific family is quite challenging with the growing number of malware and their families. Here, I will briefly describe how to do supervised classification on a multi-family malware dataset. Though this blog explains malware classification, the steps described below are quite generic for any multi-class classification.
more here.............http://sarvamblog.blogspot.com/2014/08/supervised-classification-with-k-fold.html