If you tell me (e.g., an email, a forum, a specific website) or what you expected the file to be , I can give you a better assessment of the risk.

Files with generic or random names like this, especially if downloaded from untrusted sources, carry a high risk of being malicious. unless you are absolutely certain of its source.

If you feel it is safe, scan the file with VirusTotal before opening it.

Such files can contain ransomware, spyware, or trojans.

It is impossible to provide a report on a specific file named "hn66exu9qldm.zip" without more context.