Help me! Redirects being added?

First of all, I'm totally new to the Wikipedia editing business, so please forgive any errors I've made in etiquette or judgement. I recently discovered that the Wikipedia pages for Afghanistan, Algeria, Belgium, Belize, Brazil, Chad, China, Columbia, Costa Rica, Gambia, Germany, India, Indonesia, Jamaica, Korea, Nepal, and Norway have been vandalized in a bizarre manner. Somebody has put a blank png image that redirects to a twitch.tv account on each of these pages. The image may be present on other non-nation wikipedia pages, I only the pages in the Wikipedia List of sovereign states. These changes do NOT seem to be the work of a wikipedia editor, it seems to me that somebody has actually edited the code of the website without using an account. Here is a screenshot of the html code I found on the wikipedia page for India: https://i.imgur.com/FqJFs5O.png — Preceding unsigned comment added by Graxwell (talkcontribs) 04:54, 12 August 2017 (UTC)

(Non-administrator comment) This is resolved. See ANI#Strangely compromised page. — JJMC89(T·C) 05:58, 12 August 2017 (UTC)