RTF / .DOC malware analysis — malicious · 27ba5f822b65845b

MALICIOUS

RTF / .DOC

212.4 KB

MD5: 7c00754eab6039e61eb72168ecc77f45 SHA-1: 75cede7e7c04c8d60e146e7ba432ecf4b9546144 SHA-256: 27ba5f822b65845be81211412731aa8fa191e3550f583e5290745a17b0415ff6

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution: Malicious Link T1566.001 Phishing: Spearphishing Attachment T1059.005 Command and Scripting Interpreter: Visual Basic

The RTF document contains multiple OLE objects and uses a common lure to trick users into enabling editing, which likely triggers the embedded objects. The heuristics indicate that the OLE objects are activated via \objupdate and composite monikers, suggesting an attempt to execute embedded code or launch external resources. No scripts were extracted, but the presence of OLE objects and the lure strongly suggest a malicious intent to execute arbitrary code upon user interaction.

Heuristics 7

Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
\objupdate forces OLE activation high RTF_OBJUPDATE

RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
OLE object data medium RTF_OBJDATA

RTF contains 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM

RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000bd1.bin` `8523aae02a7a1617236b5aa272c20d118b617240dcf6e57a63505a8724040317`	rtf-objdata-decoded	RTF \objdata at offset 0xBD1	12592 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s).
`objdata_01_off00006ea2.bin` `efcad781cab3d633c5a53c0b86b2c30761dd037463d8eb36ded19f59f1126d89`	rtf-objdata-decoded	RTF \objdata at offset 0x6EA2	2632 bytes
`objdata_02_off0000843d.bin` `cfdf79b95584afe599f8bd01e391d8904839d9495e407a353433d3f5e3be3602`	rtf-objdata-decoded	RTF \objdata at offset 0x843D	12261 bytes

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