Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67d5375b9fdabc2…

MALICIOUS

PDF

97.5 KB Created: 2022-10-13 08:18:45 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: 75beb52562de7f800e46d1506c53997b SHA-1: 81792ce107929dd0fa730768adb3bf0477ac6ab7 SHA-256: e67d5375b9fdabc211fb79d620defac3ae40ae266b1b7bf5bc645447120b9f90
112 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0006

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/mpdf/Direct PDF link annotation
    • http://samarbetspartnern.se/new/california-child-care-licensing-manual.xmlIn PDF document text
    • http://cuanhavesinh.com/userfiles/california-civil-appellate-practice-manual.xmlIn PDF document text
    • http://www.raumboerse-luzern.ch/mieten/boss-chromatic-tuner-tu-10-manualIn PDF document text
    • http://i-facet.com/images/Differential-Equations-Solutions-Manual-Pdf-Polking.pdfIn PDF document text
    • http://asiguere.com/images/Differential-Equations-Dynamical-Systems-And-An-Introduction-To-Chaos-Solutions-Manual-Pdf.pdfIn PDF document text
    • https://events.citeve.pt/chat-conversation/boss-chromatic-tuner-tu-10-manualIn PDF document text
    • http://asiguere.com/images/Differential-Equations-Dynamical-Systems-And-An-Introduction-To-ChaosIn 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_010_off00007cd3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_010_off00007cd3.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_010_off00007cd3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7CD3 20040 bytes
SHA-256: f74ee16628f0d619351c153107c4fbfa7a2dc2cf01b01b228cedc75a53622b4b
font_01_sfnt_off0000b2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D2 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 99778 bytes
SHA-256: edbba1892ebe3d8b9c62e58a43a25729b2ef5c081bd9fbb259661294d8def836
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 99763 bytes
SHA-256: 79f40a092316ff12e4315d7fda1e83b7aed4ab8550c1b8e2ee0e3132fb4b5992
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 99748 bytes
SHA-256: 96e08b7206b6a77191c1269fa4e7a416dacfe7f08d2ea2ad0fa5357a6dede612
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 99733 bytes
SHA-256: 2eec61a4517b93823787858447d120c6a933de3c19c7d135e2490731ce362304

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