The .mp4 extension indicates it is a digital video file.
A file might appear as Girls Forever (844).mp4 but actually be an executable like Girls Forever (844).mp4.exe .
You can check the safety of a suspicious file by uploading it to tools like VirusTotal or using NordVPN's File Checker . If you'd like, I can help you: Find official lyrics or translations for the song.
Identify where you can watch or stream the video.
ONE LOVE ONE HEART, an idol group known for Japanese pop and youth-themed music.
Attackers sometimes name malicious files after popular media to trick users into downloading them.