"I'm excited. I haven't scored three goals in a game probably since juniors," Hinostroza said. "It's something you don't think about happening but when it does, it's something special. It comes in a win and at a special time when we're trying to hold a playoff spot."
Jason Demers had a goal and an assist, and Alex Goligoski and Christian Fischer each had two assists for the Coyotes (36-30-5), who have won 10 of their past 12 games and lead the Minnesota Wild by three points for the second wild card into the Stanley Cup Playoffs.
"I'm sure everybody looks at the standings but we're not going to focus on that. We can't let things get away," Coyotes coach Rick Tocchet said. "We've got to stay focused on our team. People start getting excited and telling you how great you are, and you've got to be careful. You can't lose that edge, you can't lift your foot off the gas pedal."
WATCH: [All Ducks vs. Coyotes highlights]
Darcy Kuemper made 36 saves and is 11-2-0 in his past 13 starts, including 12 straight.
"I just think as a team our momentum is kind of snowballing here," Kuemper said.
Jakob Silfverberg scored, and Ryan Miller made 18 saves for the Ducks (28-35-9), who went 2-1-2 in their season series against Arizona.
"I don't think it was a 6-1 game out there. It felt different," Silfverberg said. "We had our chances, just didn't score and then it's kind of been the flavor of the week, we take too many penalties."
Oliver Ekman-Larsson gave the Coyotes a 1-0 lead at 17:25 of the first period with a wrist shot from the top of the left circle that went off Miller's glove. It was Arizona's 15th shorthanded goal of the season, tying the Coyotes/Winnipeg Jets record set by Winnipeg in 1988-89.
"We're comfortable defending, we're comfortable in our own zone," Kuemper said. "We know chances are going to come, and we're not panicking and opening up and letting them (score)."