Suammry advice, unless you're an advanced user, you'll need to wipe and reset your device
What it does: To change the device's PIN, Porn Droid needs administrator-level access to the phone. Stefanko wrote that the malware uses a new method to obtain that high level of access.
When Porn Droid runs, it asks people to click a button to activate the viewer app. But beneath that window, and obscured by it, is another button for setting device administer privileges.