There are a couple of different ways to specify pads. The documentation shows you one of them; your file uses a newer one.
The newest format is (from src/parse_y.y):
pin_hi_format
/* x, y, thickness, clearance, mask, drilling hole, name, number, flags
*/
: T_PIN '[' NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER STRING STRING
flags ']'
In your case:
x -27559
y 0
thick 6500
clear 2800
mask 7100
drill 2755
name "2"
number "2"
flags "edge2,thermal(1)"
