Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95bb7d21542ff83…

MALICIOUS

PDF

80.5 KB Created: 2022-05-05 02:20:10 +03:00 Authoring application: mPDF 7.1.0 First seen: 2023-12-11
MD5: be95fb0c23374891bc1d2dfa43cc6bad SHA-1: c043ef0f5806afd2576affe9a5c927dc9e596298 SHA-256: c95bb7d21542ff839c0c50dca3b30ea5c1b64ab5b0b778e41c52536348ba82be
112 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0009

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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://filesoftclub.club/fc/briggs PDF link annotation
    • http://www.vigilanciaweb.cl/dinamicos/files/crosley-record-player-cr66-manual.xmlIn PDF document text
    • http://www.ajur-1.ru/userfiles/crosley-recorder-instruction-manual.xmlIn PDF document text
    • http://eco-region31.ru/bosch-kge3501-manualIn PDF document text
    • http://artcustomdrums.com/images/99-saab-9-5-manual.pdfIn PDF document text
    • https://www.arquetopia.org/images/99-s10-manual-transmission.pdfIn PDF document text
    • http://dag.ru/paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16271df3a77b5f---braun-multipractic-food-processor-manual.pdfIn PDF document text
    • http://www.bosport.be/newsletter/bosch-kge3501-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_007_off000058b9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_007_off000058b9.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_007_off000058b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x58B9 19836 bytes
SHA-256: ad6d801f7554b4de8183daf312cecf2a3a65662328777b95eb4eaac8815799eb
font_01_sfnt_off00008e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E36 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
polyglot_child_pdf_off0000000f.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0xF 82450 bytes
SHA-256: 7618f5ee92d10958aa572c8a41a338e4f94da1a8c1528ae4747a37685cafecc3
polyglot_child_pdf_off0000001e.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x1E 82435 bytes
SHA-256: ab35135afa197107d79f87af24c8cda3a6502541c8ef6bef05755e3de7797a6b
polyglot_child_pdf_off0000002d.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x2D 82420 bytes
SHA-256: 1ee67500dd00ba4ba6381085b6ac93ca087558a2d79eac1280d65a5e43443c6b
polyglot_child_pdf_off0000003c.pdf polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x3C 82405 bytes
SHA-256: c772ba3b6a160cd4ee4f77f84581ba745764fbadf9607e71595c6e76916485ee

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