Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 12d5d7fbebc64671…

MALICIOUS

PDF / .VIR

83.0 KB Created: 2022-10-12 21:19:06 +03:00 Authoring application: mPDF 7.1.0 First seen: 2024-12-23
MD5: 2335728e0782d199b6bb99ff5644d0d4 SHA-1: 068bfbfc6b908b7c1261ddbc206c05d76024f4ad SHA-256: 12d5d7fbebc646712d9f4d2bb3a95a145d5eebde8c9dfe097a6235f06050c52a
80 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0010

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/Digitech PDF link annotation
    • http://suara.ru/img/c-770-ultra-zoom-manual.xmlIn PDF document text
    • http://garantc.ru/userfiles/c-12-operators-manual.xmlIn PDF document text
    • https://ayurvedia.ch/boss-amplifier-manualIn PDF document text
    • http://asiguere.com/images/Dezurik-Valve-Manuals.pdfIn PDF document text
    • https://gpwestlondon.com/images/Df-50-Manual.pdfIn PDF document text
    • http://fscl.ru/content/boss-amplifier-manualIn 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_005_off000039e4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_005_off000039e4.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_005_off000039e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x39E4 19836 bytes
SHA-256: ad6d801f7554b4de8183daf312cecf2a3a65662328777b95eb4eaac8815799eb
font_01_sfnt_off00006f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F61 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 85009 bytes
SHA-256: b0d89ddc39fbfec66551bf23f107422e4005e9f9068a54b4c05dac855be15b92
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 84994 bytes
SHA-256: ac4d283309f6857be284f938616f77cb3351f0e7ca956a06af7340307e3c38cb
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 84979 bytes
SHA-256: 2faa065bfbfcee7252f9e4a457882c0052d06970b51c55aae9969d2a4ab050c2
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 84964 bytes
SHA-256: 4a997f64928e36aba3204355ac1d1ef18f8cc3115f0d7ffce8c6bc387c24a36a

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