I'm gonna assume you're asking about phishing or social engineering, since you mentioned sending files to a victim's computer. Typically, this involves tricking someone into installing malware or clicking on a malicious link, which allows you to send files back to their system.
" Bruh, that's some serious cyber noob stuff right there. You gotta be careful what you share online, but if you wanna know, it's typically phishing or social engineering, not about the IP address itself. Don't go spreading that kind of info, you never know who's watching."