MALICIOUS
102
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1027 Obfuscated Files or Information
The RTF file contains a large OLE object with excessive hex-encoded data, strongly indicating the presence of a hidden payload. The \objupdate directive suggests an attempt to automatically activate this embedded object upon opening. While no specific family is identified, the structure points to a delivery mechanism for a secondary malicious artifact.
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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Large hex data blocks in OLE object high RTF_EXCESSIVE_HEXRTF contains ~1169KB 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_off00000090.binf9b1f84abca11ec23e65811104ec5fe320893e0070455db93bdcc5291f2969ef |
rtf-objdata-decoded | RTF \objdata at offset 0x90 | 584648 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
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