Malicious PDF — malware analysis report

Static analysis result for SHA-256 948882622b3673d7…

MALICIOUS

PDF

81.9 KB Created: 2021-08-17 10:50:52 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: 3c0f17dcac61e46e3412864f735a5036 SHA-1: 4a65baf390f399771338bf5c51b9d4884ce60a19 SHA-256: 948882622b3673d7011d74316f4d7fbe405c98e1ad3082dce366303fd8e9942f
72 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0022

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://srwt.ru/pdf/carrier PDF link annotation
    • http://mos2025.ru/userfiles/boss-db-90-manual-instrucciones.xmlIn PDF document text
    • http://www.aba67.free.fr/userfiles/boss-db-90-manual-portugues.xmlIn PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (stream_009_off00006fce.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_009_off00006fce.bin)
🗂 Part of campaign: secureserver.net 1471 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off00006fce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6FCE 19996 bytes
SHA-256: 8e639af5f37a01c952d7fa5ae521c275babc199f4d44038938bf51c1324a673d
font_01_sfnt_off0000a5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5AA 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 83810 bytes
SHA-256: 9d8c81e630bc11185bfdf340029c5c555f1c34c02808206bd13315f494ed0ca0
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 83795 bytes
SHA-256: 83561916aec7bb253df04956ad026e671289a00bd268be120b5145a4912e44b5
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 83780 bytes
SHA-256: 7a566fde4dc5f1266028c13cd2bffe9a2db2f6da30753bd536a51b32a3b1e326
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 83765 bytes
SHA-256: ec7ef133e1f2a0489cdc16e287ded8248412e222549739ebcf7c18a0f116e438

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