Use a media player like VLC for video/audio or a text editor like Notepad++ to peek at the internal code for clues on its format.
If the content is sensitive or suspicious, open it within a virtual machine or a "sandbox" to prevent potential malware from affecting your primary system. 5_6145643354949419838
If you did not expect a file, treat it with caution, as automated bots often distribute files using these generic naming conventions. 2. Identifying the File Type Use a media player like VLC for video/audio