If the target of the attack is 2345.com - by a DDoS attack intended to overload their server - naturally there won't be any problem with that site.

It wouldn't be very considerate of someone setting up a test to use somebody else's site in that way. 2345.com has had thousands of completely unnecessary and profitless downloads of their home page thanks to this. If Max was testing something I'd expect him to use a test target he administered.