Choose a trend that you want to play
Choose between different contests and win cash : Use a reputable security tool like Windows
: Use a reputable security tool like Windows Security or upload the file to VirusTotal to check it against multiple antivirus engines.
: The string could be a unique hash used to identify a specific user's data on a server.
Could you provide or what it is supposed to contain? Knowing the context will help me give you more specific instructions.
: Verify where the file was downloaded from (e.g., your browser history or a specific email).