That video uses a hex editor to search the contents of a file for an IP that the file reports back to and assumes that the IP address will be in plain text.
Personally, I am skeptical that an individual is ever randomly "hacked". What is the motivation and what is the payoff for the attacker? Crypto lockers and malware like that make sense there is a potential monetary return. But a random file, which would require to be run, to do anything seems unlikely to me.