Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d3fe07aca96053…

MALICIOUS

PDF

76.8 KB Created: 2020-12-25 23:25:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: c3eb9f50169377752dd91bd1097fce01 SHA-1: 5e157feeda62b781dc4aa8d090d76bc5205f6c94 SHA-256: c5d3fe07aca96053bfbdf74c167e24e273c7a567b8d327b46f7bcce8cb656d38
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=singer+children%2527s+knitting+machine PDF link annotation
    • https://cdn.sqhk.co/dufadafakuti/fByf7gg/clash_of_clans_pc_private_server_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pufojoloz/jjnuALE/treat_vertigo_at_home_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5f8b488f6a2d3.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/jhjiijq/49098181529.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f89ad54d3871.pdfIn PDF document text
    • https://cdn.sqhk.co/rowavarop/RibijeG/nijuvusulikogovinifuf.pdfIn PDF document text
    • https://cdn.sqhk.co/nevowokazem/jjJNVjc/las_vegas_national_parks_itinerary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5fd646e9ac455.pdfIn PDF document text
    • https://cdn.sqhk.co/wogigixa/5gc9Ije/78609636662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422876/normal_5fa456ffa76fb.pdfIn PDF document text
    • https://mawakigimewu.weebly.com/uploads/1/3/4/8/134875352/8200750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5fc60bf58b7ec.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/e56a7683-237e-472b-b66b-c2b3c84550a0/zajuxejidom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aadcc4d0-4de6-4559-9f50-ed8ba1a7aefa/2005_ford_taurus_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/12616949795.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_off0000ed67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED67 5552 bytes
SHA-256: ddffa2a5ca2b4192afe8b748eee7efa88c693d91e4b8b473757a32fdba7ce944
font_01_sfnt_off00010020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10020 10716 bytes
SHA-256: 79b37719feefa5ffaf9bbec39e5df3c8932ad57ee75ad322525cfd6d298d8c04

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