Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adde1ea176f8ca9…

MALICIOUS

PDF

102.3 KB
MD5: 6661b96fb0c229044e1f97964ac6c7a5 SHA-1: f3e020eb8db7185f880cefae704413caccacf086 SHA-256: 1adde1ea176f8ca91e52c33555ddf53f0af562c88836a412b501279ce06047bc
116 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a secondary PDF, both of which are flagged as suspicious. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further indicates malicious intent. The embedded JavaScript likely attempts to download and execute a second-stage payload, though its exact functionality is obscured. The presence of multiple embedded PDF structures suggests a complex exploit chain.

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
fcaef8e780d3e961719a714e8c596aa92dfcff94042262bd08dbff7ac9a0e0c2		 pdf-javascript-stream PDF /JS object 6 at offset 0x18B 6603 bytes
stream_007_off000170a6.bin
4e4c384f5c21f612ce537c8308682195716dffa3ea3fd3281ff50db5eb4bb572		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x170A6 2843 bytes
polyglot_child_pdf_off00016108.pdf
988884d091aebc67baaff0176bc5601e73c3ef25641610fa5b948cca55958f66		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x16108 14357 bytes

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