Is this somehow related to your detection? See: http://www.threatexpert.com/report.aspx?md5=c32621acb2dd417b585b494d65447ccf
and then off course we have to perform these additional scans: http://www.jsupdate.biz:80/ajax/crx.zip
and the accompanying file scan report: https://www.virustotal.com/nl/file/c34c1a356d5b4277ca04ac81b5dd23633a42897cedd8e9a0c77eeb1f8dad8b88/analysis/1386540278/

Very interesting and thank you very much, spywar and Steven Winderlich, for starting this thread and sharing this info with the avast! community.
Here we have stumbled upon a social media monitoring app, which could well be detected as the PUP-Application.Monitor.Facebook.
Older kids and teens would like avast! to detect this application, I guess 8) ;D (I am very much still a kid at 65+ :wink: )

OK, have to do this, habit of mine, whenever polonus has gotten hold of an uri, he feels the urge to scan, results: https://malwr.com/analysis/MGZlMzI1YmZkMDQyNDM1Mzg0NWM4YjhhYTJlOGRjZDI/
At least one AV identified the above detection as malicious!

polonus