This indicates it is a 7-Zip compressed archive file, which can contain any type of data, including documents, images, executables, or compressed software.
Use VirusTotal or your local antivirus software to scan the file before attempting to open it. EAHU.7z
To give you a proper write-up, I need to know where you encountered "EAHU.7z." For example: Did it arrive in an ? Did you download it from a website ? Is it on your local computer ? This indicates it is a 7-Zip compressed archive