The former Portugal youth international, who was plucked from Sydney suburban side Dulwich Hill in August, has played every game for Adelaide in his debut A-League season.
Ferreira, who also spent a year at English Premier League giants Chelsea, said he was delighted to be given the opportunity to secure the next phase of his career.
"I'm very happy. I really like the club and it's very important for me to be able to sign a new deal," the 23-year-old said.
"The club has been really good for me, as well as the team and the fans, I really like being here and I'm excited that I will be staying in Adelaide for a longer period."
Adelaide coach John Kosmina was equally pleased after Ferreira followed in the footsteps of Argentinian import Jeronimo Neumann, who put pen to paper on his own two-year extension with the Reds on Wednesday.
"It's terrific that we've been able to secure Fabio for another two years," Kosmina said.
"He came here knowing it was an opportunity to show what he is made of and in the first 10 rounds he hasn't disappointed.
"I think he has proved that he can compete at this level, and with his pace and skill on the ball, I'm sure he is going to continue to cause a lot of defenders in the A-League headaches, so I'm glad that we've managed to keep him here."