The 1993 ICAO report published the following Soviet radar tracks.
These reportedly show the final minutes of KAL007 and the flight paths of Soviet interceptors. Again using Mapwarper.net the map is georeferenced then input into Qgis and the coordinates of the flight paths and corresponding times put into a CSV file. From there the speed can be obtained.
Once again there are significant speed changes from 373 to 623 knots, again not actions of an innocent passenger aircraft. There are also times when the maximum speed of a 747 of 533knots is exceeded suggesting the aircraft shown is not KAL007.