Okay... so I've been kind of hunting for a good example of Malcom doing his thing on full display.
I'd say load up "Problem Child" off of Dirty Deeds Done Dirt Cheap.
Simple rhythmically but just WAILING with his pick hand (and ripping the tubes on that Marshall to shreds) and ultra deep/heavy low end inversions of the chords (with the higher end inversions of the chords being covered by Angus).
This high/low rhythm technique is something I LOVE screwing with.