There is a high probability that a file named this way is a malware carrier . MP4 containers can sometimes exploit vulnerabilities in outdated media players, or the "file" may actually be an executable (.exe) disguised with a double extension (e.g., Sexy Girl (2638).mp4.exe ). Safety Recommendations
Files with this naming convention (random numbers in parentheses) are often found on unsecured file-hosting sites or as "sponsored" results in search engines. Sexy Girl (2638) mp4
If you have already downloaded it, do not open it. Run it through VirusTotal to check it against dozens of antivirus engines. There is a high probability that a file