You're referring to a popular creepypasta!
The prompt "Jeff the Killer Link UPD" usually refers to recent updates for the popular Jeff the Killer: Horror Game (available on Google Play Jeff The Killer Link UPD
If you want to create and share horror-themed content responsibly: You're referring to a popular creepypasta
https://knowyourmeme.com/photos/1-jeff-the-killer (Click "Original" tab – note that KYM compresses images slightly, but it is the oldest surviving link). https://knowyourmeme
If you are looking for an "UPD" (updated) link found in YouTube comments or forums, . Historically, these links are often: