Http Thinkphp Invokefunction Call User Func Array Md5

HTTP query string targeting s=/index/\think\app/invokefunction with parameters function=call_user_func_array and vars[0]=md5 and vars[1][]=Hello. Represents a direct ThinkPHP invokefunction invocation attempt leveraging call_user_func_array to execute the md5 function with attacker-supplied arguments, commonly used as a proof-of-execution marker in remote code execution probes.