The font is a commercial typeface family designed by Thanarat Vachiruckul and released by the Katatrad type foundry. While you might find unofficial "free" links on the web, they are often unauthorized and could carry security risks. Official Source
: The family includes 10 distinct font styles , ranging from ExtraLight to Bold, with matching italics for each weight. ekachon font download free work link
You can find the full family (ranging from ExtraLight to Bold) directly through the designer's foundry at Free Alternatives: Ekachon The font is a commercial typeface family