While bypassing a purchase might sound like a victimless crime to some, downloading and executing random DLL files from the internet poses significant security risks.
In the modding community, files of this nature are often "wrappers" or "loaders." A wrapper is a piece of code that sits between the game and the official platform. It can be used for benign purposes, such as allowing a player to run a game without an internet connection (offline mode), or for more controversial purposes, such as bypassing digital rights management (DRM). The existence of a file like "steamapirajasdll" underscores the perpetual tug-of-war between platform holders who want to protect their software and users who want total control over the software they own.
Open > Virus & threat protection > Protection history . Locate the blocked file and select Actions > Restore .