Malware Insights
The RTF document contains a large amount of OLE object data and excessive hex-encoded data, strongly suggesting it's designed to hide a payload. The presence of ".objdata" and ".objupdate" heuristics indicates the use of embedded OLE objects, which are often exploited to deliver malicious content. The extracted artifact "objdata_00_off00000609.bin" is likely the hidden payload. Without further script analysis or network indicators, the exact family and ultimate goal remain unclear, but the pattern points to a downloader or exploit delivery mechanism.
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 ~1159KB 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_off00000609.bin70133b816c3d39e33e991086427aa351ae9e1d7130e80f03e9a1daee95afcdab |
rtf-objdata-decoded | RTF \objdata at offset 0x609 | 579721 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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