MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
T1027 Obfuscated Files or Information
The RTF document contains a large OLE object with excessive hex-encoded data, indicating a hidden payload. Heuristics for RTF_OBJDATA, RTF_OBJAUTLINK, and RTF_OBJUPDATE suggest that the embedded OLE object is designed to be automatically activated upon opening the document. This points to a delivery mechanism that leverages OLE object vulnerabilities to execute a secondary payload, likely downloaded or extracted from the objdata section.
Heuristics 5
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Automatically linked OLE object high RTF_OBJAUTLINKRTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
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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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Large hex data blocks in OLE object high RTF_EXCESSIVE_HEXRTF contains ~1118KB of hex-encoded data inside \objdata sections — may hide a payload
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OLE object data medium RTF_OBJDATARTF contains 1 \objdata section(s) — embedded OLE objects
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Suspicious extracted artifact info 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 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00000047.bin4f1f073dfde58f143db421b0509c21ceb95fce8f5f6f869358273eb592141c44 |
rtf-objdata-decoded | RTF \objdata at offset 0x47 | 559329 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
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