Josh Drinkwater produced a perfect kicking display to spoil fellow Australian Simon Woolford's first game as Huddersfield head coach.
The Catalans Dragons half-back kicked six goals from as many attempts as the French club moved to within 80 minutes of a second appearance at Wembley with a hard-fought 20-6 Ladbrokes Challenge Cup quarter-final triumph.
It was a turgid, stop-start affair played in front of a crowd of just 2,151 at the John Smith's Stadium but Catalans coach Steve McNamara will not mind that as he watched his side continue their revival with a fifth win in their last six games.
Catalans Dragons were thankful for 12 points from the boot of Josh Drinkwater
A try from Huddersfield captain Leroy Cudjoe on his 250th career appearance - his first for nine months following major knee surgery - briefly suggested the Giants might extend their own winning run to five matches but the disappointing performance highlights the size of the task still facing Woolford.
The Catalans, who gave a debut to New Zealand back-row forward Kenny Edwards, their new signing from Parramatta, relied on their aggressive defence to grind out a 4-0 interval lead and strengthened their grip in the second half.
The only scores up to half-time came at the beginning and end of the first half from the boot of Drinkwater with two penalty goals.
Huddersfield winger Darnell McIntosh produced the only clean