Malicious Office (OOXML) / .DOC — malware analysis report

Static analysis result for SHA-256 58e3a3cd1bde2980…

MALICIOUS

Office (OOXML) / .DOC

237.4 KB Created: 2026-04-12 17:34:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2026-04-14
MD5: 89716337ba0996f411225e110a3c0de7 SHA-1: abb8876ba594cb89bc8e56dde8140ef31caa8803 SHA-256: 58e3a3cd1bde298004bff75db60ebfe13f2dc9ee17d8c80f7c249651bc27900b
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains a VBA macro that executes upon opening the document. This macro, named 'jPWM1x5r_W_n_4m1l_6F', is heavily obfuscated and appears to construct a string which is then passed to an unknown function 'Qm8fshXRytq8B5Byd'. While the exact payload is not discernible due to obfuscation and truncation, the presence of a Document_Open macro and the execution of arbitrary code strongly suggest a downloader or droppper functionality. The reconstructed string is likely a URL or command to fetch and execute a secondary payload.

Heuristics 5

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • 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://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2012/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
eef14847ebdf9bc92b86e2c9d83a20ac58886ab8ff47c76265a115a11090ca90		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 3581 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
a3c00f1821d1ff9743e9c70337615ae55fc08b318052b68410016ccffe43096a		 vba-project OOXML VBA project: word/vbaProject.bin 14848 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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