Ok, did anyone actually bother to read the source code? Nothing here implies it is "inserting child porn" anywhere.
This function generates a log line for file forensics. Essentially, it is cataloging files on a computer and storing information, like filename, size, creation date etc, in a file. 1 line per file.
The highlighted piece of code grabs the "path" to the file and stores it in a variable. The code to the right of the "||" (pipes) ONLY RUNS if the file has no path, which should never actually happen.
Therefore, the code to the right of the "||" should never actually run. Even if it did, all it would do is randomly choose one of those three file paths and use it as the file's "path" (but the file wouldn't actually exist if someone looked for it). It is clearly meant as an inside joke by the programmers.
You can see evidence of this "humor" elsewhere.
TLDR: Misleading title, this code does not install anything anywhere. It is an internal easter-egg/prank by the programmers.
Source: I'm a software engineer