Malicious PDF — malware analysis report

Static analysis result for SHA-256 4784210d22ca7f85…

MALICIOUS

PDF

67.4 KB Created: 2020-11-19 08:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 9fcaf942df25d44c7835944558b6ca9b SHA-1: 39c4cfb683dc81f353a0f0d36efadc3097535ccf SHA-256: 4784210d22ca7f8598840691fd4267fadf02272b4512ca7a42bd9c0e668c0484
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffking.ru/strik?utm_term=american+idol+nude+contestant In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5fa457cc43646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5f91731095042.pdfIn PDF document text
    • https://guboriratuji.weebly.com/uploads/1/3/4/2/134235556/bb6ec8ae7.pdfIn PDF document text
    • https://giximelet.weebly.com/uploads/1/3/4/2/134234701/9654a6c761.pdfIn PDF document text
    • https://bepugodaz.weebly.com/uploads/1/3/4/2/134236138/5362167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5fa2501acde38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379231/normal_5f90fa42cee23.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/110a527c-20b2-45d6-a57f-573f4868a04e/chemical_principles_the_quest_for_insight_7th_edition_solutions_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1432ee5c-d944-4b7c-bafe-e3d719f0978c/wupovemumupatul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45706646-645e-4e93-91fc-ebda1311e842/liwuki.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/article_about_globalization_in_the_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/best_iptv_providers_canada.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_off0000cca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA8 5072 bytes
SHA-256: f4aa716a9b8d30945d246e69b9e3ae53cf68c05be4872d5deaca4f2dbf420206
font_01_sfnt_off0000ddcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCF 10292 bytes
SHA-256: 0a286e5f60c7c35704868397f2741aefb2170708d824dafbe03a37bc60120723

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