MALICIOUS
178
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious File
The RTF document contains embedded OLE objects with large amounts of hex-encoded data, indicated by RTF_OBJDATA and RTF_EXCESSIVE_HEX heuristics. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be activated, likely to download and execute a secondary payload. The extracted artifact 'objdata_00_off000004da.bin' is the most prominent IOC. The document body is unreadable, so the specific lure is unknown.
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 ~2066KB of hex-encoded data inside \objdata sections — may hide a payload
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OLE object data medium RTF_OBJDATARTF contains 2 \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_off000004da.bin8fd74d686ed49c8ec4fd4548adc2da12fdc10ab71cfb8f7e564a58af1021b5d9 |
rtf-objdata-decoded | RTF \objdata at offset 0x4DA | 318034 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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