The Nittany Lions rallied from a two-goal deficit late in the third period to force a 2-2 tie.
The Nittany Lions have dropped five of their last seven.
Through a deadlocked final period and overtime, Penn State drew Notre Dame but lost its chance at an extra point in conference play.
The Nittany Lions scored 12 goals and gave up just four over the course of the two-game weekend series.
After struggling against Ohio State for much of the Indiana game, quarterback Drew Allar came alive against the Terrapins.
With Trey Wallace out to injury, Cephas stepped up as a strong option at wide receiver.