Malware push notification

Hi,

I’ ve been having an issue with some push notification and pop-ups lately.
I installed sucuri plugin to scan the site, everything seems to be clean but there is a script (below) which leads to a site related to malware e.t.c.

https[:]//aanqylta.com/a4/8a/80/a48a807e59fb8d5503642ee3fcbb8f87[.]js

Is there any way to locate this script whithin the site files?
Any other suggestions are welcome.

Thanks!