MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1059.005 Visual Basic
T1190 Exploit Public-Facing Application
The sample leverages the CVE-2017-0199 vulnerability, which is indicated by the OLE2Link/URL Moniker heuristic firing. This vulnerability allows the execution of remote code by downloading a secondary payload from the specified URL. The embedded PDF also contains suspicious findings, further supporting the malicious nature of the file. No VBA macros were found to contain executable statements, but the primary exploit mechanism is clear.
Heuristics 6
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OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199Document 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.
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Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGEA 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.
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VBA project contains no executable statements low OLE_VBA_MACROSDocument contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LUREPDF 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.
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Embedded URL info EMBEDDED_URLOne 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://192.3.216.144/windows/windwindiwindiwndinwindnwindinw%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23windiwisnwindiwnsiwndins.DOC
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 1206 bytes |
stream_001_off00000960.bin2998a126f4fa11ceb265371a5f7968ec18bc4692a32631a544232dc74040021f |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x960 | 252488 bytes |
polyglot_child_pdf_off00001200.pdf51808680bb52acf27ecf98ba4754ff88c859bf1f61e08f2fc35a26957d54eefb |
polyglot-child-pdf | Secondary PDF body inside ole container at offset 0x1200 | 430080 bytes |
polyglot_child_pdf_off00024000.pdfcfe0e5775d7b3a8dc4adf01f0c2346a72aff5dfc06fb70ec260f41b36464ce4b |
polyglot-child-pdf | Secondary PDF body inside ole container at offset 0x24000 | 287232 bytes |
polyglot_child_pdf_off00046a00.pdfcd568f97426175290b55b25090ed9ea14d10a24c9ce7a896f6a6c25a30796ece |
polyglot-child-pdf | Secondary PDF body inside ole container at offset 0x46A00 | 145408 bytes |
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