Malicious PDF — malware analysis report

Static analysis result for SHA-256 478f6b17e9794096…

MALICIOUS

PDF

44.4 KB Created: 2020-10-09 11:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 4c9bae0e906df7e8e8491237d0229053 SHA-1: 28b4d64b94e94e75f8433787b433767ef288fad9 SHA-256: 478f6b17e97940967841056009b3eaef39d65f32f15f471920a48c7ae1045a5a
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://ggtraff.ru/strik?keyword=samsung+vrt+washer+not+spinning In PDF document text
    • http://files.mareadingcouncil.com/uploads/1/3/1/8/131871643/dufudobaxil.pdfIn PDF document text
    • http://files.handfelted.com/uploads/1/3/1/3/131379230/vejusepizoziz-zawofelipemuja-mowonunurax-wudimi.pdfIn PDF document text
    • http://pejox.clairedaviselite.com/uploads/1/3/1/0/131070602/585955.pdfIn PDF document text
    • http://files.britneyjoanthomas.com/uploads/1/3/1/8/131871488/kefifoba.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/1/0478/0385/9103/files/judolajepeboronegerajaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2575/5043/files/ludoxol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/funny_stuff_to_say.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5624/2074/files/ball_pectin_vs_sure_jell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6441/6661/files/kexejedunijora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/megaman_x4_cheats_legacy_collection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5725/6869/files/las_cabezas_de_san_juan.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_off00006fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD1 5456 bytes
SHA-256: 3f9af295388e353c81c54c3ada1a29630987675f3008ea3957da8c2713d3da6d
font_01_sfnt_off0000824a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824A 10240 bytes
SHA-256: c24c4dddff20b855a042090f502cfd54825fb3bc41ab1671e8509cc2e37c149f