.mkv (Matroska) and .mp4 are both video containers. A legitimate file would only use one.
If you encounter a link or a download prompt for "Fruit Massage.mkv.mp4," digital safety experts recommend the following: Fruit Massage.mkv.mp4
Historically, hackers and "trolls" use double extensions to hide the true nature of a file. On many operating systems, the final extension is hidden by default. A file named Fruit_Massage.mp4.exe might appear to a user as a simple video file but is actually an executable program that could install malware or viruses. 3. Viral Spread and Social Media high-impact content thrives:
Never download files with double extensions or from unverified sources. Fruit Massage.mkv.mp4
The "Fruit Massage" trend has seen spikes in interest on platforms where short-form, high-impact content thrives: