MALICIOUS
310
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
T1059.003 Windows Command Shell
T1204.001 User Execution: Malicious Link
The file is an RTF document exhibiting multiple critical heuristics related to CVE-2017-8570 and CVE-2017-8759, indicating exploitation of vulnerabilities to execute embedded content. The document body presents itself as a financial transfer advice, a common lure for advance-fee scams. The presence of embedded OLE objects and extracted artifacts suggests these are likely payloads or scripts intended for execution, potentially downloading further malicious content.
Heuristics 10
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Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE_2017_8570RTF \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.
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CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
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Composite Moniker in RTF OLE object high RTF_COMPOSITE_MONIKER_RELATEDRTF 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.
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\objupdate forces OLE activation high RTF_OBJUPDATERTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
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Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LUREDocument contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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OLE object data medium RTF_OBJDATARTF contains 3 \objdata section(s) — embedded OLE objects
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://schemas.microsoft.com/office/word/2003/wordml
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000dc1b0.bin6b2272659b4e3873e12c621231722c5e2dd5ad93592e439daceb5583321c8120 |
rtf-objdata-decoded | RTF \objdata at offset 0xDC1B0 | 34283 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 shell/COM execution token(s).
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objdata_01_off000ed8da.bin24fedef2d4fe5e3d6666fae2543850c54134511ad6be8583d5aa0438ef699c5d |
rtf-objdata-decoded | RTF \objdata at offset 0xED8DA | 2632 bytes |
objdata_02_off000eee7d.bin142dc43284d9abe994719f8fb67bc4c04bfc3f07528a1a66b0bad7e552ee8e78 |
rtf-objdata-decoded | RTF \objdata at offset 0xEEE7D | 12297 bytes |
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