The file is masked as a RAR archive but actually contains an executable ( .exe or .bat ) script that installs spyware.
The distribution and consumption of such content may carry legal risks depending on jurisdiction. As noted in a legal analysis, distributing, and especially selling, certain types of content can be subject to criminal penalties under criminal law. For example, the sale of "無修正動画" (uncensored videos) is often cited as a high-risk activity. FC2PPV-3620789-2-4K.part10.rar
When you encounter a file labeled FC2PPV-3620789-2-4K.part10.rar , it indicates that the file is part of a larger, split archive. The file is masked as a RAR archive