get https://www.virustotal.com/api/v3/monitor_partner/detections_bundle//download
Each day a CSV formatted list with hash detections is generated for each engine.
Each line contains an owner company, hash, analysis history link and a hash download url.
You should access each engine bundle pointing to /api/v3/monitor_partner/detections_bundle/{engine_name}/download
To download previous bundles you can use: /api/v3/monitor_partner/detections_bundle/{engine_name}/{date('%Y-%m-%d')}/download