Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af0240fcb1a5105…

MALICIOUS

PDF

39.5 KB Created: 2020-10-14 04:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 1ad42632d262eac2fff0f01fe0f2522a SHA-1: c9ecaa806050c30520114504e18efd0a4eccec09 SHA-256: 4af0240fcb1a51054ed0f5004d55a605b65b6713daca9aa488a3f844c37f1da2
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=apkpure+hola+free+vpn In PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3794757.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/aa92d.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/foburadip.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.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/f7e69ebc-eb67-49a4-a936-6a51f97486d9/limuwebazaxapukuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d2d970-2132-4223-bbf7-1736fa0b1b04/menepebitefogenijegize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ae74bc-37d5-4a78-b35b-8a4c09dbd743/tujizisesutifigegikufam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e24a1f3-4bae-4386-a27b-ef66ac7c1c8e/zugopupoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5324/3806/files/un_mundo_feliz_aldous_huxley_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/south_middleton_school_district_school_board.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_off00005c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C25 4924 bytes
SHA-256: 10fc93c26b98fb120b9e85ce6a57815793bfb747fd26730ee71c169487f6043e
font_01_sfnt_off00006ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE5 10580 bytes
SHA-256: 90ff857b4123d2f7bef275fad24663049b1232292f0bc288f6069f71bcd715a5

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