Legacy (2020) on Netflix

Plot summary

A father takes his adopted teenage son into the isolated wilderness for a hunting trip. Armed men turn the pair into the prey, and the assailants are unknown to the father and son. A stranger joins their fight for survival and tells them that the boy's biological father is an international crime lord, and that trained assassins have been sent to kill the teenager. An MI6 officer and police arrested the crime lord in Beograd, and he was brought to The Hague to stand trial. From custody he works to eliminate the witnesses who could testify against him, and the boy is one of them.