>>2968034Most of them are from 2ch which it won't let me link directly but the thread you want is /aa/res/77871.html (NSFW/gore warning) so there may be a name for it in Russian. There doesn't appear to be a pixiv tag for it but you may find some examples with the danbooru tag photo_background:
https://danbooru.donmai.us/posts?tags=photo_background 