This is a bad ass italian slasher from the early 70's called Torso which was directed by Sergio Martino.
The film stars Suzy Kendall and is about a maked killer in a ski mask stalking and killing coeds at a University in Italy. The killer wears a redish scarf too and strangles some of his victims and uses a knife on others.
There are some cool kills in this film for being an early 70's flick. There's blood, boobs, masked killer, cheesy actors, etc......good film imho.;)