Malicious actors sometimes give dangerous files boring, numerical names to bypass your suspicion. They may use "codec exploitation" to hide scripts inside the video's metadata.
If you received "1000145.mp4" from an on WhatsApp, Telegram, or Discord, do not open it. 1000145 mp4
Keep your media players (VLC, Windows Media Player, etc.) updated to the latest version to patch "codec" vulnerabilities. Windows Media Player
If you see this on a hard drive or cloud backup, it's likely just an automatically indexed file from an old device. When to be Cautious 1000145 mp4
In some academic studies, "1000145.mp4" is a placeholder for observation footage, such as monitoring sleep patterns in animals.
While a video file isn't "alive," it can trigger vulnerabilities in your media player to run hidden code.