Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 b479f24bbd1708ed…

MALICIOUS

Office (OLE)

40.5 KB Created: 2017-10-21 16:27:00 Authoring application: Microsoft Office Word First seen: 2017-10-28
MD5: 30d849b5ac264db0dd44030798907f0e SHA-1: 57419c1dec25f195208e71691a3371077fc28d65 SHA-256: b479f24bbd1708ed79b3f9bfca42315784041cbd6edf9f5d5a7b38b0b8880799
230 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1203 Exploitation for Client Execution

The sample is a malicious Office document that uses a fake invoice lure to trick users into enabling macros. Heuristics indicate exploitation of CVE-2007-3899 and CVE-2026-21514, with evidence of an embedded executable or LNK file. The document body explicitly instructs the user to enable editing and mentions downloading an invoice, aligning with a phishing or social engineering attack. The presence of 'cmd.exe' in the CVE-2007-3899 heuristic suggests a command execution payload.

Heuristics 7

  • CVE-2007-3899 — Microsoft Word malformed string memory corruption critical CVE likely CVE_2007_3899
    Word OLE document has the MS07-060 malformed-string exploit shape: a Word 97-family FIB points to a malformed DOP/string-table region with an abnormal INT_MAX run, inflated text counters, and exploit payload or Mdropper.Z campaign evidence.
  • OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514
    Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
  • ClamAV: Doc.Dropper.Agent-6354819-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6354819-0
  • Ole10Native package carries executable/script file type high OFFICE_PACKAGE_RISKY_FILE
    OLE Package displayName or fullPath ends in an executable or script-capable extension. Even without UI extension spoofing, embedding a runnable payload inside an Office document is a high-risk delivery pattern.
  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://eway.ca/ In document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ole10native_00.bin ole-package OLE Ole10Native stream: ObjectPool/_1570078589/Ole10Native 2916 bytes
SHA-256: b07ad8fa300f39070b09aedaaf99306480e37bfabccb116f40915e1b5cb10897
ole10native_01.bin ole-package OLE Ole10Native stream: ObjectPool/_1570078680/Ole10Native 2928 bytes
SHA-256: 44fc0654cd34e64543329a4f5b187652b14a99884c06f67674f7ba0cebe84d0b

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