Malicious RTF — malware analysis report

Static analysis result for SHA-256 1d5d162013cdca9a…

MALICIOUS

RTF

662.3 KB
MD5: 10820fc81129fb705eebdb3249cb334a SHA-1: fb188467c460ec646aa34f7aabc489327329468f SHA-256: 1d5d162013cdca9a88cfe6610863be82ad961d9f5f6caf1b13e3882b5fa05fa5
242 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 User Execution: Malicious File T1027 Obfuscated Files or Information T1566.001 Phishing: Spearphishing Attachment T1204.001 User Execution: Malicious Link

The sample is an RTF document containing multiple embedded OLE objects and a composite moniker, which is a characteristic pattern for remote template injection or exploiting vulnerabilities like CVE-2017-11882. The presence of a content-enable lure is designed to trick the user into activating the content. No scripts were extracted from the sample, but the structural analysis of the OLE objects and the high-risk heuristics indicate a high probability of payload delivery via OLE activation.

Heuristics 8

  • Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE related CVE_2017_8570
    RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 4 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • ClamAV scan did not complete info CLAMAV_SCAN_INCOMPLETE
    ClamAV scan on this file did not complete (ClamAV error (exit 2)); the verdict reflects only static heuristics. The result is not cached so a later submission will retry the scan.

Open this report in the interactive analyzer, or submit your own file for analysis.