Malware
Vflooder
Vflooder floods VirusTotal by infinitely submitting a copy of itself.
Vflooder is a Windows malware family.
Background
Vflooder overwhelms VirusTotal by submitting copies of itself in an endless loop, and certain variants reportedly attempt the same against Twitter. The actual disruption to those platforms is minimal, though it can be bothersome for analysts. The majority of builds are shielded with VMProtect.
Source: Malpedia (Fraunhofer FKIE).