Calendar spam on my iPhone 12 Pro Max

On my i phone 12 pro max under calendars (in other section) suddenly i can see a new calendar which I haven’t subscribed..the calendar name and content is in Arabic and i am not able to make out how it came. I dont know to read arabic as well..Is it some kind of malware..can anyone advise how to delete this calendar..screenshot of the calendar and that of one of the events created by this calendar is shown..someone please help

[Re-Titled by Moderator]