RTF malware analysis — malicious · 205995e5835ec0af

MALICIOUS

RTF

341.2 KB

MD5: 776ae5196f616bd6bf2a7fe34d7a5812 SHA-1: 6c576351c60b203500b179054303ccc39db564c5 SHA-256: 205995e5835ec0afdb827c868f5ec7e8f87f0328ca85ade3ac73cc585790a242

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution T1204.002 Malicious File T1566 Phishing T1566.001 Spearphishing Attachment

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are designed to be activated by the user. The presence of a 'Macro/content-enable lure' heuristic indicates the document likely instructs the user to enable content, a common tactic for malware droppers. Without further script or body content, the exact payload and delivery mechanism remain unclear, but the intent is to leverage OLE object activation for malicious purposes.

Heuristics 6

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

RTF contains \objemb — embedded OLE object
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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000969.bin` `7ff2741efd0a20087af6b48bc49d0d9106758e0724e818770d5bb8927a550982`	rtf-objdata-decoded	RTF \objdata at offset 0x969	75720 bytes
`objdata_01_off00027144.bin` `f4c761490fd63fc4aa791746a9a2b588dafd9e2c764f57f0c85377b99ef07062`	rtf-objdata-decoded	RTF \objdata at offset 0x27144	2632 bytes
`objdata_02_off000286e7.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x286E7	12297 bytes

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