Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd8821b781d12f5…

MALICIOUS

PDF

50.6 KB Created: 2020-10-15 03:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: f4b28e3647691bbfafe49d3d5888985b SHA-1: 1416fd01b0dce53bc8025dc51664dc64f6ababcc SHA-256: 3dd8821b781d12f57844ddafaacb41b2698d1fa74c5441b3a0e6e01c4a6229dc
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://gettraff.ru/wb?keyword=ultimate%20epic%20battle%20simulator%20free In PDF document text
    • https://site-1038561.mozfiles.com/files/1038561/11118608516.pdfIn PDF document text
    • https://site-1042841.mozfiles.com/files/1042841/46267178385.pdfIn PDF document text
    • https://site-1040360.mozfiles.com/files/1040360/xanitulojoliveguzajugira.pdfIn PDF document text
    • https://site-1042270.mozfiles.com/files/1042270/67244296370.pdfIn PDF document text
    • https://site-1039188.mozfiles.com/files/1039188/56613136859.pdfIn PDF document text
    • https://site-1039602.mozfiles.com/files/1039602/convert_document_to_searchable.pdfIn PDF document text
    • https://site-1043248.mozfiles.com/files/1043248/91832025122.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/2612e4cc-4158-493a-9521-fe3c4573cfb2/ravuvegesubupalizajonimiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6acf9f5-76de-40df-ab17-ba58d30f51c8/44796534015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03311c9e-ebb9-43c3-847a-5c3ec8db952e/85289715888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39ae454-8216-47bd-a4d2-76be5c36ae31/dufutobogodonatopune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eebbb82-aaff-447b-b2f9-415387a1f074/doduzutinonabeja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3304bf3b-9b59-49c4-9b23-059c4e4b393c/38859696488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27669913-7251-4d5c-bee0-c37005e17038/libapuworujogedupovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acb3690a-1534-4375-8068-d0bf3b0ea996/17163036803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8a0b338-d905-49f6-855d-4e31d50fb3d3/49507705180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b462f8b-0a88-42ac-8d65-f22cc539ad6f/5769679395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40070871-a2fe-4e1e-a64f-6ef498259aba/24146348494.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b0cd447-4b0e-4c6c-b691-48462b2a4885/70617594309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/47934733539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7446/1594/files/persona_4_chie_voice_actor_change.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_off00008704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8704 5292 bytes
SHA-256: 735edb6364a5b55434338d4399240e483667e1a61c57b88b153a832a71f2d902
font_01_sfnt_off000098de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98DE 10776 bytes
SHA-256: 1413bcc38b04fea9ff70183d93df1eb1a3855d69e6258c6d7224d159b2211062

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