Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 272147dda1f89d5b…

MALICIOUS

RTF / .DOC

229.2 KB
MD5: 57a1d5e632f1d93de315f116bf165aa6 SHA-1: 8959b7ef8a7f20e24af9be8ab3879d46435c0689 SHA-256: 272147dda1f89d5b41c57c7b4e978f163833322369d4416cb24517b5d8eb29d0
180 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The RTF document contains multiple OLE objects, with specific heuristics indicating auto-linking and forced updates (".objupdate"). This strongly suggests the document is designed to lure the user into activating embedded content, a common technique for delivering malware. The "SE_ENABLE_LURE" heuristic further supports this, indicating the document likely contains instructions to enable macros or editing. No specific family could be identified due to the lack of script content or network indicators.

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.

FilenameKindSourceSize
objdata_00_off00000965.bin
778b1304947e56c95ca97d0f7a36f65538449c64c1f2bbf50c05e2529f52a647		 rtf-objdata-decoded RTF \objdata at offset 0x965 20571 bytes
objdata_01_off0000b12a.bin
1af484323aa51f0bc067b498458ed2106db428c7b743185ac9a6e18e7b648e31		 rtf-objdata-decoded RTF \objdata at offset 0xB12A 2632 bytes
objdata_02_off0000c6cd.bin
44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037		 rtf-objdata-decoded RTF \objdata at offset 0xC6CD 12297 bytes

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