: Use the search function within your own Telegram app for the string AgADJwEAAji1cUc to see if it appears in any groups you are already a member of.

: If you have the file in a Telegram chat, you can sometimes see the original sender or "Forwarded from" header at the top of the message.

The filename format (specifically the "AgAD..." prefix) is a standard identifier used by for files uploaded to its servers. Because these IDs are unique to specific messages and often reside in private channels or groups, they typically don't appear in public search engine results unless the post has been indexed on a web-viewable Telegram mirror. To find the original post, you might try the following: