StudToken Honeypot

1. The constructor mints the supply to the deployer: _transferTO(msg.sender, 30000000000e18);, which is 30 billion tokens at 18 decimals.
2. The owner can flag any address: function setPanCakeSwapReciever(address _recipient, bool _feeless) public onlyOwner { ... PanCakeSwapReciever[_recipient] = _feeless; }. Nothing in the code restricts which address it is, so it can be a liquidity pool.
3. Every transfer and transferFrom runs _transfer, which calls calculateFeesBeforeSend(sender, recipient, amount). That function contains if(PanCakeSwapReciever[recipient]){ revert("Error: Can not sell this token"); }.
4. The revert undoes the whole call, including the earlier _balances[sender] = _balances[sender].sub(...) line, so the seller's balance is untouched and the sale simply fails. The check looks at the recipient only, so any transfer into a flagged address fails regardless of who sends it; the owner has no exemption in this function.
5. The flag can be turned off again with the same function and false. renounceOwnership exists in Ownable, which would freeze the flag at its current value.

The code shows what the owner can do; no opened transaction shows setPanCakeSwapReciever being called or which address was flagged.