Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bfe0c8b346732cd…

MALICIOUS

PDF

135.9 KB Created: 2022-04-08 21:41:21 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: f11867bb80f97f5973facd4278d98cfd SHA-1: 226364972422ea26377df4c9ac4d46fb04678916 SHA-256: 0bfe0c8b346732cd17b309b6441f822f7e524f879c3611ee7b914dbe251c1d2d
72 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0011

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/co-op PDF link annotation
    • http://www.equip-info.de/pimages/canon-rebel-xsi-repair-manual.xmlIn PDF document text
    • http://www.gamainvest.sk/images/data/canon-rebel-xsi-troubleshooting-manual.xmlIn PDF document text
    • https://formations.fondationmironroyer.com/en/node/9357In PDF document text
    • http://eurocomes.com/images/bsac-expedition-manual.pdfIn PDF document text
    • http://elipseradiologiadigital.com/images/bsa-wilderness-first-aid-manual.pdfIn PDF document text
    • https://congviendisan.vn/vi/bosch-instant-hot-water-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_009_off0000720e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_009_off0000720e.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_off0000720e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x720E 19996 bytes
SHA-256: 8e639af5f37a01c952d7fa5ae521c275babc199f4d44038938bf51c1324a673d
font_01_sfnt_off0000a7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EA 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 139131 bytes
SHA-256: b6d85a0208a7b00393bedffae77ee2b8fcae31bd07dab5fe27f1912d4ef56634
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 139116 bytes
SHA-256: a4b01571b33d187da484c8506cd8fb522c8b3ffc3478aecb85b77019a6f315cb
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 139101 bytes
SHA-256: 5721304ea6169644c05fc94617b5ef9dbb5f5c882fde4e9776838029a816a684
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 139086 bytes
SHA-256: 4aea08f3e9b24e368f34586debd1c21d346ce7192d3ccd5bd0d5ad43c1c754b5

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