First you need to know a reference point between DXF and pad file. Let say for DXF it is (1000, 1500) and for pad file reference point it is (0, 0). Click MOVE >> select DXF file by user pick >> and enter the values (x, y) in command bar as (1000, 1500) and then give the destination point (0, 0). By doing that your DXF file will be align with pad file or hole file whatever it is.
Regards
Khurram