Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 d636238d3d7c5a8d…

MALICIOUS

Office (OLE) / .XLS

1.10 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ee00243cc2b621765fef494461d248c8 SHA-1: 4a3e884bf5d8d9525fcce0d9045b28c4d7a97c17 SHA-256: d636238d3d7c5a8ddbf14e1fd18a6362aaa1d4e09ba1a3e933e3975262636e7b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic T1071.001 Web Protocols

The primary heuristic indicates exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to download a remote payload from the URL 'https://linkjago.me/pZchDM?&chowder=tacit&pine=sordid&bail=dramatic&pollution=tearful&vagrant=sleepy&shadow'. The document body and heuristics suggest an advance-fee scam lure, likely to trick users into opening the malicious document. A secondary embedded PDF was also found with suspicious static findings, indicating a multi-stage attack.

Heuristics 5

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Secondary embedded PDF body has suspicious static findings high POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
polyglot_child_pdf_off0005e000.pdf
e37caacf1d7aff95e30200288a7aec20ab803baf19f718cd4776ac37f9d06f76		 polyglot-child-pdf Secondary PDF body inside ole container at offset 0x5E000 773632 bytes

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