RTF / .DOC malware analysis — malicious · aa059e8e97d97005

MALICIOUS

RTF / .DOC

384.5 KB

MD5: bb0c0123ac21cdca35332e60a860e372 SHA-1: 26307725640f1145975924a67d12d8541d9c7611 SHA-256: aa059e8e97d97005ec9c3362a6e98813b9f23b2b036cbded83d97a84f3987b27

140 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains multiple OLE objects, with specific heuristics indicating the use of ".objdata" sections and ".objupdate" to force OLE activation. This suggests the document is designed to exploit vulnerabilities within OLE object handling to execute embedded code. No specific scripts or URLs were extracted, limiting further analysis of the payload.

Heuristics 5

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
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_off000007d1.bin` `25dfaeea706c154e78a5293433c7d4a3b2f1a70e7e0d9d51e52e893406f516df`	rtf-objdata-decoded	RTF \objdata at offset 0x7D1	97903 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off000323e4.bin` `c1062dbe2c516490ba03c091a3be0d514bef7428a936eb00367c1b3069f9cedc`	rtf-objdata-decoded	RTF \objdata at offset 0x323E4	2632 bytes
`objdata_02_off00033987.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x33987	12297 bytes

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