MALICIOUS
82
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The RTF document contains an embedded OLE object that is triggered by \objupdate, indicating an attempt to exploit a vulnerability. The presence of objdata suggests the exploitation of the Equation Editor vulnerability (CVE-2017-11882). The extracted artifact, objdata_00_off00000043.bin, is likely the payload or exploit code. The file is classified as malicious, and the techniques observed are consistent with delivering a secondary payload via an embedded object.
Heuristics 4
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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 1 \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 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_off00000043.bin6aed5300db8f56a40504059c4211aaf3331017425b6eebab273043d04cd35281 |
rtf-objdata-decoded | RTF \objdata at offset 0x43 | 33398 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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