Malicious PDF — malware analysis report

Static analysis result for SHA-256 9491780ae71ff604…

MALICIOUS

PDF

40.6 KB Created: 2020-10-05 12:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: 601a870e127769ddaf4a1779eb88cddd SHA-1: d7e0c03f7c11d49c9e2c72f46176a7106e977fb8 SHA-256: 9491780ae71ff6040400ac7488272d6d25b394e2aba22bc725d38bc124c643ec
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://cctraff.ru/strik?keyword=studio+apartment+floor+plans+pdf In PDF document text
    • https://site-1041291.mozfiles.com/files/1041291/matedo.pdfIn PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/venegerapimegazemusetusa.pdfIn PDF document text
    • https://site-1039171.mozfiles.com/files/1039171/fapenes.pdfIn PDF document text
    • http://lamaxi.wrangellsda.org/uploads/1/3/2/6/132683292/81d2d854a87886f.pdfIn PDF document text
    • http://files.teddybarbier.com/uploads/1/3/2/6/132680933/zudikebemuw-redotogi-kepuramov-lomusofoxijevap.pdfIn PDF document text
    • http://lenev.dcpetanque.net/uploads/1/3/2/6/132682883/39438a571d14.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000614c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000614c.bin)
    • https://cdn.shopify.com/s/files/1/0457/5254/9532/files/1833973306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3262/8376/files/ruwogagomavuzege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3548/3551/files/clarkstown_south_high_school_famous_alumni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6996/4439/files/ragulof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8788/3165/files/94854538484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7700/9060/files/38071582892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/81040115798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1592/4630/files/33812882990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2941/7112/files/cellular_respiration_and_fermentation_lab_answers.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 extracted file (font_00_sfnt_off0000614c.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000614c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614C 5292 bytes
SHA-256: 275ba67011e44d1297a2ec7e797244ac8450e224904e857e6c7e3745d481cb2b
font_01_sfnt_off00007334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7334 10088 bytes
SHA-256: d2e0cb7015d821c99b9fc2c081fc19a7f00a6982259a0f42f38070baafd8a376

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