diff --git a/objects/file/definition.json b/objects/file/definition.json
index d3be15e..a4f60e1 100644
--- a/objects/file/definition.json
+++ b/objects/file/definition.json
@@ -81,6 +81,10 @@
       "misp-attribute": "text",
       "misp-usage-frequency": 1,
       "disable_correlation": true
+    },
+    "malware-sample": {
+        "misp-attribute": "malware-sample",
+        "misp-usage-frequency": 1
     }
   },
   "requiredOneOf": [