There are no near term plans to provide this functionality. However we will keep it under review for periodic re-evaluation in the future.
Azure App Service TeamSalam Dahbour commented
We need this. We currently have to build VMs so we can ClamAV. That's the only thing we use the VM for. It's a waste, adds complexity, adds a ton of security requirements to our infrastructure, and requires maintenance. We'd really appreciate a service that's similar to ClamAV - write the bits to a stream and receive a reply about whether there's malware or not, but no VM.