Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd284c3e58e731d…

MALICIOUS

PDF

42.6 KB Created: 2020-11-07 10:03:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: c4e6e607b730a8df582b0bb3d0043868 SHA-1: 4f9bc841da6f45bd5455e5d980907b56d33256cf SHA-256: 3dd284c3e58e731d7b5d9f3f0a9b27ccc2c960ab4271a0c6ecc3732b416fab2d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafffe.ru/wb?keyword=chapter%2010%20study%20guide%20answer%20key PDF link annotation
    • https://gekitudijelal.weebly.com/uploads/1/3/4/2/134265938/4218383.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/juvuto_jefesarojajaluw_wevar_jorivukak.pdfIn PDF document text
    • https://nexawukuvinu.weebly.com/uploads/1/3/4/5/134578226/bofasikuraraja.pdfIn PDF document text
    • https://bidukupe.weebly.com/uploads/1/3/4/3/134348295/lofuwasa_petale_foporez_japigubo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pewivawo.files.wordpress.com/2020/11/55860441538.pdfIn PDF document text
    • https://kilenija.files.wordpress.com/2020/11/8680959934.pdfIn PDF document text
    • https://xixojis.files.wordpress.com/2020/11/kibozegipowepexokodanokad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f21140d8-4542-4816-9722-8d9039d6bba6/16574920665.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/95519257918.pdfIn PDF document text
    • https://najoluni.files.wordpress.com/2020/11/primera_guerra_mundial_causas.pdfIn PDF document text
    • https://vasedaroxito.files.wordpress.com/2020/11/43559079740.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_off000066f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F3 5544 bytes
SHA-256: 1e936ed69d16e86f76ef93d8c4dd3bb82966b5a99883122598468ba960dd7d24
font_01_sfnt_off000079e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E0 10640 bytes
SHA-256: f13978c6270c48f0d7a6378ccee0f256058de6cb78fce50df926dd192f80fbad