Malicious PDF — malware analysis report

Static analysis result for SHA-256 4434120880a233c5…

MALICIOUS

PDF

110.5 KB
MD5: 690e610be88404d9fefb4ea4674e8c79 SHA-1: cbf94037609b05f487f832db3b1f97e5afd8037e SHA-256: 4434120880a233c548e5e199e10f48043dc2d462f91eec81b8ff0d50b5bbee31
116 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file exhibits multiple heuristic firings indicating malicious intent, including embedded JavaScript and a suspicious secondary embedded PDF. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' strongly suggests malicious content. The presence of JavaScript actions and streams points to code execution capabilities within the PDF, likely for delivering a secondary payload.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
03af9b3d8b31cddcea24ffe9810cb9c380e7051612e468b87347aba1d0214420		 pdf-javascript-stream PDF /JS object 6 at offset 0x18B 6710 bytes
stream_007_off000197cf.bin
7cd525d273482f57dd75642dfe72fbd3b33facd66905175f57c1f616a9f2a077		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x197CF 1000 bytes
polyglot_child_pdf_off0001887f.pdf
268ddd6857b789c3455f43c4cb15ea0f23cecff3d656975b88e7163864b405de		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1887F 12656 bytes

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