MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1559.002 Component Object Model Hijacking
T1204.002 Malicious File
The RTF document contains multiple OLE objects, with specific heuristics indicating the use of \objupdate to force OLE activation and the presence of Composite Monikers. These elements strongly suggest an attempt to exploit OLE object handling to execute embedded code. While no scripts were directly extracted, the presence of embedded binary objects (objdata_*.bin) points to a dropper or exploit delivery mechanism. The document body content is not indicative of a specific lure.
Heuristics 5
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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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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.
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000007d1.bin5a4ea57a668f3acbf38e7056a21626ddfc76b975924bb7dce0405a01fa91e970 |
rtf-objdata-decoded | RTF \objdata at offset 0x7D1 | 98865 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_off00032bb4.bin7a8598fff434e2b582d3d87e32bb1d356d28f288618d4b03cf39e56767823039 |
rtf-objdata-decoded | RTF \objdata at offset 0x32BB4 | 2632 bytes |
objdata_02_off00034157.bin44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037 |
rtf-objdata-decoded | RTF \objdata at offset 0x34157 | 12297 bytes |
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