Malware file analysis
If you want to test your endpoint security with a test virus file, you can download the sample file from eicar
Never attempt to execute a suspected malware file, rename the file as .txt so that you will not execute it accidentally, and have a sandbox environment to analyze the file.
You can check the below services and choose anyone which offers free service
Comodo Instant Malware Analysis
To examine the file contents you may use a tool like
Also please check the “Understand DNS“