RTF malware analysis — malicious · 87eae5c4303df06e

MALICIOUS

RTF

1.83 MB

MD5: 66998c73784e730be19b1afaa711677e SHA-1: 4016a5da07f240b1c41c498663420b9dffb7ffe3 SHA-256: 87eae5c4303df06e1bfbf2967ad3e281fd7c1812fd34bb10eeba46519ab7449c

102 Risk Score

Malware Insights

MITRE ATT&CK

T1559.001 Component Object Model

The RTF file contains OLE object data and a significant amount of hex-encoded data within its objdata sections. The \objupdate directive indicates an attempt to force OLE activation, which is a common technique for delivering embedded malicious payloads. The extracted artifact 'objdata_00_off00000074.bin' is likely the hidden payload.

Heuristics 4

\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.
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX

RTF contains ~1923KB of hex-encoded data inside \objdata sections — may hide a payload
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
Suspicious extracted artifact info 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000074.bin` `53abd752f2e77ca413ebc75d58959ba85b60bea99797f4c6ddc6afad64a22849`	rtf-objdata-decoded	RTF \objdata at offset 0x74	961943 bytes
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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