You can upload the actual image to tools like Google Lens or TinEye to see if it exists elsewhere on the web under a different name.
When photos are synced via iCloud or transferred from an iPhone, the system often assigns a UUID to prevent filename conflicts. 504454E8-202F-4848-9A70-3A0084BF3B03.jpeg
If this was found in a specific app folder (like WhatsApp, Discord, or a browser cache), that application is likely the source. I can help you find related information if
Open the image properties to see if it contains a "Date Taken" or location data, which can help you remember the context.
This naming convention is most common in the following environments:
Some applications use these strings for temporary files stored in hidden system folders. How to identify the content