What happens when the last added block in a blockchain is corrupted? What happens when the last added block in a blockchain is corrupted? Is it still possible for the block to be accepted by a majority of the miners?
By definition a node's idea of the blockchain is among all valid versions of history the one with the most total proof of work.

Because chains are required to be valid, it is not possible to have a block in there that violates consensus rules. It doesn't matter what miners do; full nodes will still ignore the block entirely, as if it was never created.