Why is the request sent to the wrong address on my site?

Question

PHP

This morning I had a problem on the site - for some reason, requests for statics began to be sent to the wrong place.
Requests like {site.com}/{folder}/{something}.jpg began to be rewritten to http://121.59.17.8/{site.com}/{folder}/{something}.jpg ip - 121.59.17.8 not mine and is not related to me. I opened it from the phone (joined the same router via Wi-Fi) - everything opens normally, but for some reason it became so on the computer.
Didn't make any changes for a whole month.
I opened it in the console - on the images the links were normal like {site.com}/{folder}/{something}.jpg, but if I open it in a separate tab - again the same parsley.
The problem occurs on IE and Chrome
Update
It was lucky that the problem turned out to be in the browser - the same thing started on other sites and not just on mine.

Answer 1

obviously a virus

Answer 2

Do you or your hosting provider not use CDN technology? (static caching on geographically distributed servers for faster content delivery to hosts remote from the main web server).
If anything - the Chinese IP belongs to Chinatelecom.