Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c4a54206b47d82…

MALICIOUS

PDF

93.7 KB Created: 2022-04-08 14:11:32 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-06
MD5: 6de0267c69b316d1a2c12114383400c4 SHA-1: 934725a44b546d6bd6bc8aeab10f0c6c8960f35e SHA-256: c3c4a54206b47d823dd0199ec489e713577b41325fa4ff056ab5c6ca8a3d4a1d
72 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0012

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/a PDF link annotation
    • http://daydala.com/userfiles/canon-powershot-a580-instruction-manual.xmlIn PDF document text
    • http://enewind.com/pliki/canon-powershot-a570-is-manual.xmlIn PDF document text
    • https://www.informaquiz.it/petrgenis1604790/status/flotaganis26032022-2153In PDF document text
    • http://hamlettocarinas.com/images/browning-buckmark-hunter-owners-manual.pdfIn PDF document text
    • http://halex-group.com/images/browning-buckmark-manual.pdfIn PDF document text
    • http://www.bouwdata.net/evenement/bosch-hdi7282u-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_008_off000067c1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_008_off000067c1.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_008_off000067c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x67C1 19996 bytes
SHA-256: 8e639af5f37a01c952d7fa5ae521c275babc199f4d44038938bf51c1324a673d
font_01_sfnt_off00009d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9D 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 95900 bytes
SHA-256: 0c2affce60d127c20d6fd0a4f6577a59012f71bafba9783f82d1b1c59bc5c91b
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 95885 bytes
SHA-256: d75f776b009afa9aaa9a1df27431de88c1c9a0368a94d7c197b6ea757915c895
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 95870 bytes
SHA-256: c77566c34c8f874382a18ad61fb5befb506a93003697cb6528f6a137f925105a
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 95855 bytes
SHA-256: 105828f7b418467de5a6a34b5a11ac22405f2b22ef9318a221b6da0bb0bac5c5

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