I agree with those who say on the chances of identifying the breeding on your orchid is probably impossible. That said, just enjoy it for what it is.
If you want more info on the growing of Phals, a very good place to start is with the "sticky" at the head of this Beginner Forum, "The Phal Abuse Ends Here". Oodles of info and answers to lots of questions which have previously been discussed on this site.