Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afb33bd5d1aa586…

MALICIOUS

PDF

48.8 KB Created: 2020-10-31 04:32:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: beb64da8a7cda5b38e738d4e8825d675 SHA-1: 84205034595fd615dd3b67d2f79ee247964f8d9c SHA-256: 4afb33bd5d1aa586f8377760dd094146555dd0fc7a466a7e9e1adeac692fdd59
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/wb?keyword=types%20of%20switching%20in%20networking%20pdf In PDF document text
    • https://warakamaluxib.weebly.com/uploads/1/3/4/3/134378328/josezegon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_5f8a2727d4f6b.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/bfe8426fb8ea8.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/6e89f83.pdfIn PDF document text
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/9366304.pdfIn PDF document text
    • https://ravidaxixow.weebly.com/uploads/1/3/4/3/134315840/fuviri-xowidevaja-kavixe-jojelutarumuxa.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/570a2862-8fc1-48c4-9d3c-1e69156f9e2f/dragon_ball_episode_of_bardock.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/network_work_order_sap.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/nakikemetunodukadase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5fa68e9-3c9b-4afc-a8a6-f1c34c67ee47/1508393934.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_off00007eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAB 5380 bytes
SHA-256: 2e0c627e5e53d9713c6e98f4f6e7cbe6bca9f02271122ef4f5555eff338545ae
font_01_sfnt_off00009114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9114 10464 bytes
SHA-256: 64a20b9fb91932089cfa6868ab019cf7ae983dfea9819874c92da8a0c66ef65d