RTF / .DOC malware analysis — malicious · a08d1f6ad62c4768

MALICIOUS

RTF / .DOC

350.2 KB

MD5: b59ab62dc16f878a4356b610be474009 SHA-1: 3b3e88bc44d710e3cce4691bccd71b27f01ec5a9 SHA-256: a08d1f6ad62c47683bd4f7de087c69887b42b138506a226d031ad7f4af316d06

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are indicative of exploitation. The presence of ".objdata" sections and composite monikers strongly suggests an attempt to leverage OLE object vulnerabilities for code execution. No specific document body text or scripts 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.
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\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 4 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000007da.bin` `94e5bd98299b84e7ebf04688f15c12141c77ef4b03f6c2b07d2ee257251aa0f7`	rtf-objdata-decoded	RTF \objdata at offset 0x7DA	67611 bytes
`objdata_01_off00006f89.bin` `387b4629065c582de9768c1fe4417b408408ad625c14ffe68b4f1946aa912f55`	rtf-objdata-decoded	RTF \objdata at offset 0x6F89	67584 bytes
`objdata_02_off00029548.bin` `a8e170497da15decc11753d202c99c86f7a7ffd2d52481e6b9c79a5403675379`	rtf-objdata-decoded	RTF \objdata at offset 0x29548	2632 bytes
`objdata_03_off0002aaeb.bin` `e8d4fe950caed6dcfde26f4b616825bbe11b93458425974b7d075167f675abf7`	rtf-objdata-decoded	RTF \objdata at offset 0x2AAEB	12297 bytes

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