If you are using a platform like Steam or Epic Games, you can automatically repair the installation: Right-click the game in your library. Properties Installed Files Local Files
In 2022, security researchers at Kaspersky uncovered a campaign distributing a malicious file named helper_x64.dll via old 2shared links. Users searching for a “missing DLL” for a popular video editor downloaded the file, which then connected to a command-and-control server and installed remote access trojans (RATs). The attackers specifically chose rare, nonexistent DLL names so that desperate users would have no legitimate source and would turn to file-sharing sites. buddhadll 2shared link
He opened it. It contained only two words, written in code comments: If you are using a platform like Steam