The command show mlav cloud-status is used to verify that the machine learning-based antivirus (MLAV) for portable executable (PE) files is functioning correctly within the Palo Alto Networks WildFire environment. This command provides the status of the machine learning model updates and their integration with the antivirus profile. If the model is working properly, this command will return information indicating that the MLAV service is active and synchronized with the cloud-based threat intelligence. This ensures that the firewall is effectively leveraging machine learning to identify and block malicious PE files.