Have you ever think how big scams and hacks happen in crypto spaces? Because hackers or scammers use some special tools to hack. So it's not impossible to create a fake wallet file by importing some wallet address without private keys. That's how they could make you a fool. So it's better always stay away from a such deals to save your funds. Don't be greedy.
People create fake trust wallet balances to scam others. Every scam happens unexpectedly and we fail to predict the loopholes of the technology. So I am not sure if it's possible or not. Once it happens, then only everyone will be aware. So be careful and don't be greedy.