Hi arun,
Any progress or solution on your problem?
I experience a similar issue where AdX has flagged some of my revive urls (no info on exactly which ones) as malware. I'm running v4.0.1-dev . I checked my whole domain for malicious code, checked append/prepend fields, checked database for illegal users but found nothing so far. No 3rd party content served so the issue is within my domain (or a false positive from google).