Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3d178d37b313af…

MALICIOUS

PDF

41.1 KB Created: 2020-11-08 12:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 0917bbfef54da8a120e28766026bea6d SHA-1: 2bfbe5ee7054a46185a1d70c521157f6ca31d2be SHA-256: 4e3d178d37b313afd577f1e2c64644b1726e94f585c69f900490d35ab5be2ee1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://traffine.ru/wb?keyword=telefrancais%20episode%2011 In PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/muvebixizufilas.pdfIn PDF document text
    • https://pedutiwoda.weebly.com/uploads/1/3/4/4/134481784/257191.pdfIn PDF document text
    • https://menedusuwoguv.weebly.com/uploads/1/3/4/6/134699995/xetisunekig_nopowif_xowudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/45582c45-7f4d-48d0-926b-44e6c40271c1/26963733375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1d8b9e4-1ba6-40ce-8603-67b014da583f/46066327892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfad24a4-ad4e-4af0-99fe-5790944d8afa/dovikunokimogejoxibew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d982ca-41a2-4185-bdbf-1192a6119150/fudilexejupuvof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c2279d-786b-4932-a38f-6491a899eae7/77201450218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1533c5e9-f92a-464b-8dd6-0dfe91db01dc/razigubolixigivaxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3513ceb-edf0-48f5-84fe-f0624192b2fc/kosorivogekepudiwafeloj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ce15949-0fda-45d4-a1c5-e5b983ad48ac/45017548657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a704da2-666f-4034-8470-838a61819477/riddle_time_worksheet_answers_quadratic_formula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e7ad809-d8cc-44fd-9547-31eda2613cb2/nightbane_fight_guide.pdfIn 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://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 5148 bytes
SHA-256: 63306dde24635111a799d387ddb58f94732266bae094812c33dfd788dcb7f84b
font_01_sfnt_off00007496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7496 10608 bytes
SHA-256: 2d7b6e42e529121f49504c472ac5bd3301ad05a03b8e26ff53b1c91479a76ba8

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