If you can tell me this file came from (e.g., social media download, Telegram, email), I can tell you exactly what it is.
Without access to the specific file, it is impossible to identify its content. However, I can suggest a common, highly useful feature for managing such files, particularly if it was a downloaded video: _-4894023556914.mp4
Features like those found in VLC Media Player or modern file explorers allow you to hover over the file to generate a quick preview thumbnail or see a "frame-by-frame" scrub, making it easy to identify the content without opening it [1, 2]. If you can tell me this file came from (e