Malicious PDF — malware analysis report

Static analysis result for SHA-256 9327a76a5d6aabf4…

MALICIOUS

PDF

93.3 KB
MD5: 1a60b9bef07ed54a2927b595a44653f9 SHA-1: f9837c67c7b2d2b29f2f94e3b16c8decba0783d6 SHA-256: 9327a76a5d6aabf4bbc682abb5baed83c173a1190661c6fbd180a017aceb8fd0
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. Furthermore, a secondary embedded PDF was detected with suspicious static findings, including JavaScript and length mismatches. This suggests the primary PDF is a container for malicious content, likely intended to execute arbitrary code via the embedded JavaScript. No specific family could be identified.

Heuristics 4

  • Secondary embedded PDF body has suspicious static findings critical 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0052_000.js
45fea71ee6347153ec3719ebc3910509cd6fa568f263c29e7474c694308f5c7d		 pdf-javascript-stream PDF /JS object 52 at offset 0x3F4E 301 bytes
javascript_obj0057_001.js
38497d5e0d70362df7e12ace2debf3fe916da23faa7cd839807596db45f71478		 pdf-javascript-stream PDF /JS object 57 at offset 0x5500 46146 bytes
stream_005_off00000b74.bin
e4217c167299ac63f64b8b7e903cc0196f0828693d273431b8b793a12ed0fed3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB74 1000 bytes
objstm_0053_00.bin
f9797d0fa28384c30d8bf1da89163104ce539753e417fa1f9c5fd135d1eceb39		 pdf-objstm-decoded PDF /ObjStm 53 0 obj (inflated) 50 bytes
polyglot_child_pdf_off000108f4.pdf
d5188808f722e65c5414649ddea9ba2b8e7665a10c692c1485774b76a2ab8160		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x108F4 27691 bytes

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