Malicious PDF — malware analysis report

Static analysis result for SHA-256 4786216282bf9f90…

MALICIOUS

PDF

42.1 KB Created: 2020-10-26 05:27:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 07de271939c8f0eca72db1ab48376f6a SHA-1: 08af5d825d6f407270ba83ee4aa0daf2b401d918 SHA-256: 4786216282bf9f90862ab798bb8ba5d18f1494a22d90605b67fc20d8206ea319
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://gettraff.ru/123?keyword=fish+dichotomous+key+worksheet+pdf In PDF document text
    • https://risimukino.weebly.com/uploads/1/3/1/3/131383953/mexuro.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/5be87308866010.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/wiwaboza_nezizujine_tugewokakobex_mewedezoxudero.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/vopadowiganuwop.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://sopizelofixafav.weebly.com/uploads/1/3/4/4/134438569/waposakerub.pdfIn PDF document text
    • https://posilopawirina.weebly.com/uploads/1/3/4/3/134353572/5820800.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/milusajeset.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1001/3376/files/poborama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/bamij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0718/9407/files/perineumona_contagiosa_bovina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8247/2343/files/folarotomoverodesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6712/0053/files/9733502590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1167/5578/files/8189131688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37db7dc8-17a0-43b7-a67c-97dee993cc13/10426857124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7584bd7f-dfd6-4500-a6b9-06b843bf4cb7/pulerakuvemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87054714-16a9-4f3e-83be-46d5c3032111/67927431918.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_off00006270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6270 5364 bytes
SHA-256: 06738dbb6a0fee4b964d40f1adaa5bdeea6b5ed820fd851f758f90031f6a2d26
font_01_sfnt_off000074a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A6 11344 bytes
SHA-256: 0cf0c4318bd5bcad78e125b7be5f9b004d236d8242415e6f4b213c339f85d1b4

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