A game played on Portuguese soil as both teams look to step up their preparations for the season ahead produced few opportunities of note.
Both teams struggled for creativity, giving those in attendance at Estadio Municipal De Albufeira little to shout about.
Premier League new boys Hull just about edged proceedings, but Roberto Koren produced their only genuine effort on target.
Wednesday came as close as anyone to forcing a breakthrough during a keenly-fought first half, with Alex Bruce clearing a Jermaine Johnson effort off the line.
Graham made his Hull debut as a second half substitute, with the on-loan striker awarded 30 minutes off the bench 24 hours after completing a move from Sunderland.