Malware getting added to cart page magento 1.9
I have a website hosted in magento 1.9 and it has been affected by a malware code on cart page. I know magento 1.9 is old and should move my website to magento 2, and of course we are doing it but right now I need to remove that malware from my website. Details: This is the website url - https://www.great-save.com/ Malware is a js code and I can see it on cart pages at the end but only in mozilla browser and not in google chrome. Malware in mozilla browser.
There is no malware in google chrome
I tried looking for this script using grep through all the files and also tried to search it using file name, but did not find anything. I looked in the Miscellaneous HTMl section in admin panel and there is no such script added.
Update: I tried using grep to locate the malware inside my public_html directory but did not get anything.