What year are you looking at? Also, the Prowler Sonic is heavier that the Scarp Sonic version - longer travel forks, beefier frame etc.
9.2kg for 2018: https://bikeboard.cc/ktm-scarp-sonic-12-2018-ber7531
9.7kg for 2019: https://www.ktm-bike.pt/pt/loja/5351-bicicleta-ktm-scarp-sonic-29-2019-12s-detail.html
Mine was purchased here in Portugal - but my bike is a bit lighter being the Small. We weighed it at the shop without pedals. It is light for a FF. Not as light as my 6.1kg Wilier Zero6 road bike, but light.
Scarp sonic, no prob with the weight claim, i just read bumf and reviews.
Best i can get with a specialised epic carbon with ultra light thunder burt tubless tyres carbon seat and post plus carbon bars and carbon crank is 10.8 with light pedals fitted.
So your bike is very light indeed