Anyone who have been in crypto for a year now will most likely have a share of those scam tokens. I think they have bots that monitor when wallets are dropped in forums,  airdrop website or giveaway threads. If this is not how they get the wallets, then I'm a kind of confused how they get the wallets that they send thousands of transactions at random.

The purpose of these phishing wallets is definitely to steal your funds. Some are even listed in PCS and when you try to sell it, they will gain access to your wallet or drain your BNB as gas fees after you authorise the transaction. 

As the blockchain technology is evolving,  scammers are also upgrading their skills because thieves hide under something genuine to unleash their wisckness. We just have to be careful!