
Salem Al-Dawsari opened the scoring in the 22nd minute and Marcos Leonardo added the second in stoppage time to send the four-time Asian champions through to a last-16 clash with Manchester City in Orlando on Monday.
Pachuca, already eliminated after losing their first two games, were lively but an Al-Hilal defence superbly marshalled by Kalidou Koulibaly shackled danger man Salomon Rondon and restricted the Mexicans to long-range shots and half chances.
Al-Hilal were guilty of being a bit casual at times and were given a few scares by Pachuca as they sat deeper to protect their lead in the final quarter but held on for a victory that gave them five points to Red Bull Salzburg’s four.