no detection here
https://www.virustotal.com/nb/file/c6b4452a157ceedc7f0d6aacb0064e12f6fc7d937d68477addc5f3e478e6578f/analysis/1443386238/

what is the full message from avast when detecting? … you may post a screenshot

False Positives can be reported here https://support.avast.com → avast virus lab