Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed8b75d1f15e521…

MALICIOUS

PDF

96.4 KB Created: 2022-10-06 16:43:20 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: a316db59972a98a37441e27869e8422b SHA-1: b2a5a54344f3096183bbfda69839916554e13a5c SHA-256: 8ed8b75d1f15e521a69236afb5fabe18d5df9d7e80a6dd684dda72c334a6b72a
72 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0010

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/mpdf/Dell PDF link annotation
    • http://dogalakustik.com/depo/sayfaresim/innotek-free-spirit-collar-manual.xmlIn PDF document text
    • http://www.hotelsinpelling.com/userfiles/innotek-free-spirit-automatic-no-bark-collars-manual.xmlIn PDF document text
    • http://www.drupalitalia.org/node/69957In PDF document text
    • https://hund-gerecht.com/images/Craftsman-6.0-Mulcher-Mower-Manual.pdfIn PDF document text
    • https://www.firstimpressionspro.com/images/Craftsman-6.0-Pressure-Washer-Manual.pdfIn PDF document text
    • http://www.drupalitalia.org/node/69961In 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_off0000683b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_009_off0000683b.bin)

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_off0000683b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x683B 19780 bytes
SHA-256: 4fa1e1f62893db1504b694ba157ca733dbc9a64fe6775bec7c5c9e8d41f3a745
font_01_sfnt_off00009d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8F 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 98704 bytes
SHA-256: 15e109d79f49f3917f6f1a1fc9d8320473f1d2de17a50f589b3b7e6b1174df1f
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 98689 bytes
SHA-256: 21ca5bf6fd5d3d42f5a073ba7893ef055303ddd9db4465cbe5ae473df4801b5e
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 98674 bytes
SHA-256: 80e7a88356da3271e30113177cc6b9c543d49a0379be0594e8fa1c84bdb7d534
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 98659 bytes
SHA-256: 41ef37785a84bc5ceeed51d3fb26f1253503d5a6bb2647fb7e28592a58d2169a

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