Malicious PDF — malware analysis report

Static analysis result for SHA-256 af263f3c9701ee37…

MALICIOUS

PDF

42.3 KB Created: 2020-10-02 06:17:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: bc8e5c05ada6dc968518b70d38f5130a SHA-1: 805ab77dd261da9a0547af5f470f4117baf84b5a SHA-256: af263f3c9701ee37b9a838dc4d03645a0bf92c1f6f2d18f38040707843617670
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=east+west+torrent In PDF document text
    • https://site-1041779.mozfiles.com/files/1041779/92291292224.pdfIn PDF document text
    • https://site-1038586.mozfiles.com/files/1038586/20607894106.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/bapisojigajobofer.pdfIn PDF document text
    • http://dekepeg.karishmadonde.com/uploads/1/3/1/6/131606227/nifugim_lunaje_forew_ledegegapan.pdfIn PDF document text
    • http://fenab.abiwright.co.uk/uploads/1/3/1/6/131637308/77c6e4be93.pdfIn PDF document text
    • http://files.quirkyquiltress.com/uploads/1/3/1/8/131857916/7b492b9b.pdfIn PDF document text
    • http://files.teddybrighton.co.uk/uploads/1/3/1/4/131407061/236893.pdfIn PDF document text
    • http://files.abovetherootscbd.com/uploads/1/3/1/4/131453252/zaduwuwolaneg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/critical_visions_in_film_theory_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/29542293540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6513/files/tupudajapifezazobarav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/the_politics_of_the_administrative_process_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db1c4f9-54b7-4326-b846-bb88b2024107/jorirev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/377654bd-5071-4b0a-b9e1-5d2264250582/4303305185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1014995-0c39-4e2f-b8df-461ca65fe35e/jimiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea1d2f9-e782-462a-be87-fa3f4280812f/23265084618.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_off000069a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A1 4696 bytes
SHA-256: 684097b7eae6fe15174374e80fe10d9e163d9ef2ad79746b261ebcf9b4e0bcfa
font_01_sfnt_off000079ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BA 10156 bytes
SHA-256: 9ea140d40867f724e66cfd31855be38c83c8ac26f3cca4b274e1c93571d4a063

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