This is a Chinese lanyard knot, ABoK knot #807, tied with paracord. The knot is also known as the plafond knot.
I followed the directions for tying in my copy of Geoffrey Budworth's 'The Complete Book of Decorative Knots'. You can also find a YouTube video tutorial for the knot from TIAT.
The knot has a flat square shape and the pattern looks the same on the front and back.
The knife shown is a Victorinox Swiss Army Huntsman.
...And a paracord bracelet version with integrated Chinese lanyard knots.
I just looped onto one buckle end, tied 3 spaced out Chinese lanyard knots, looped around other buckle end at wrist size, then tied the cobra stitches/Solomon bar/Portuguese sinnet back towards starting end. Run the cords through the underside of each of the Chinese lanyard knots as you go.