This indicates an attack attempt against a command-execution vulnerability in the Awingsoft Awakening Winds3D Viewer plugin.
The vulnerability is caused by an error when the vulnerable software handles a malicious Winds3D scene. It allows a remote attacker to execute arbitrary command by enticing the user to visit a malicious website.
Awingsoft Awakening Winds3D Viewer plugin 18.104.22.168, 22.214.171.124
Temporarily disable the affected plugin.