The 22-year-old striker continued his fine debut season in the Austrian Bundesliga with another goal.
The goal was Boyd's 12th of the season in the Austrian Bundesliga, and his 16th in all competitions.
Boyd scored in the 66th minute, but his side was unable to hold onto the lead, and conceded an equalizer by Julius Perstaller in the 83rd minute.
Rapid remains in third place with the draw, which continued a poor run of form for the team. Boyd's side is now winless in its last eight matches. It is level on points with fourth-placed Sturm Graz, which has a game in hand.