Here is the link to the source code

https://etherscan.io/address/0x25fa13f5ef96b35cf14eb4b6c0b518cbce250fd1#code

If you click find similar contracts

You will find 85 similar contracts

https://etherscan.io/find-similiar-contracts?a=0xb6ba63978b5c43ad9cac0622aa34c5c1073fadc3


The likes of which are FapToken, Kuarta Token, Tokens.Digital, & The Love Token.

There is no backdoor unless there is a backdoor to all 85 similar contracts.