Add MalDatabase (#2675)

README.md

@@ -161,6 +161,7 @@ API | Description | Auth | HTTPS | CORS |
 | [AbuseIPDB](https://docs.abuseipdb.com/) | IP/domain/URL reputation | `apiKey` | Yes | Unknown |
 | [AlienVault Open Threat Exchange (OTX)](https://otx.alienvault.com/api) | IP/domain/URL reputation | `apiKey` | Yes | Unknown |
 | [Google Safe Browsing](https://developers.google.com/safe-browsing/) | Google Link/Domain Flagging | `apiKey` | Yes | Unknown |
+| [MalDatabase](https://maldatabase.com/api-doc.html) | Provide malware datasets and threat intelligence feeds | `apiKey` | Yes | Unknown |
 | [MalShare](https://malshare.com/doc.php) | Malware Archive / file sourcing | `apiKey` | Yes | No |
 | [MalwareBazaar](https://bazaar.abuse.ch/api/) | Collect and share malware samples | `apiKey` | Yes | Unknown |
 | [Metacert](https://metacert.com/) | Metacert Link Flagging | `apiKey` | Yes | Unknown |