Receiving ads in notification bar in Micromax Canvas Spark

I bought Micromax Canvas Spark q380 2 days back and have either uninstalled or disabled most of useless apps that were pre-installed in it. I have updated most of Google related apps and have not installed any other 3rd party apps. Only Clean Master was manually updated (ie not through Play Store but getting installed/updated itself)

Now whenever I connect to internet then I am receiving ads in notification bar to install apps.

Any ideas which adware/malware this Micromax people have installed?!

Or how to stop these ads or uninstall the specific app causing this?

Download from this link