Euclideum launched their bounty project around 2 months ago. Website is dead already, but Twitter, Facebook, Telegram running. There is no support, only spam massages. Banned his profile permanently as fast as possible.
The airdrop was being carried out in a dex which might have as well been owned by the hackers because it's also not accessible at the moment.
Fortunately the airdrop page was archived before it when offline: http://archive.is/YpwK2
I think the scam was all about phishing for the ether address private keys once someone tried to import their wallet to ArchimeDEX in order to claim for the tokens