Many results are not human-posted. "Scrapers" are automated bots that trawl the web for specific keywords and then paste the findings onto Pastebin. These posts are often nonsensical aggregations of text containing the keywords, used for SEO spam or indexing purposes.
If an attacker finds site:pastebin.com + "mt bank" , they aren't just looking for a login page. They are looking for:
For M&T Bank customers: You don't need to panic. Large banks have Security Operations Centers (SOCs) that monitor for this 24/7. But it is a stark reminder that in the world of cybersecurity, your company's internal data is only as secure as the least careful employee with a clipboard and a web browser.