Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28c807d84b0a39…

MALICIOUS

PDF

48.9 KB Created: 2020-10-16 07:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 73f47b7d6231d5264625ffefb1429c15 SHA-1: 83343fcfb9a32d068e6138aaae0f7f3fcb2ef196 SHA-256: af28c807d84b0a399c0766b1012e558db23b0db94b8172e391d221e67e5c9779
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=destiny+2+sanctified+mind+sol+inherent+guide In PDF document text
    • https://site-1042842.mozfiles.com/files/1042842/52836299811.pdfIn PDF document text
    • https://site-1041845.mozfiles.com/files/1041845/torivurasol.pdfIn PDF document text
    • https://site-1044067.mozfiles.com/files/1044067/esbl_detection_methods.pdfIn PDF document text
    • https://site-1042978.mozfiles.com/files/1042978/lofilozemovixotivobajal.pdfIn PDF document text
    • https://site-1048453.mozfiles.com/files/1048453/41139169377.pdfIn PDF document text
    • https://site-1038771.mozfiles.com/files/1038771/29464069225.pdfIn PDF document text
    • https://site-1039343.mozfiles.com/files/1039343/686898325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f87ac1e4a2d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f88e48fe3db0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f872138d041c.pdfIn PDF document text
    • https://xumabilere.weebly.com/uploads/1/3/1/1/131163638/8069858.pdfIn PDF document text
    • https://buxivadoga.weebly.com/uploads/1/3/0/7/130740323/26b55.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.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/1/0430/6596/6741/files/how_many_valence_electrons_does_carbon_have_available_for_bonding_to_other_atoms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6980/0089/files/31_hostess_rewards_march_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0214/6212/files/setalopudipefexirobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57a2bb99-41b2-4029-a82c-d4f0ca361165/zumavuxixifaluxefaviro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4ce0ec6-d62e-4eb6-a557-8b2c8a25cc0c/39843357841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0301589-5081-4241-a89f-d84f37993c15/tiwaxogadeferojula.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_off0000802c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802C 5668 bytes
SHA-256: 2bfe0eacaf91ec6dc1176ab6d612ad023441ac2387592b6e1d34b43be99ae2f0
font_01_sfnt_off0000934a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934A 10220 bytes
SHA-256: 86458594a626122d6c98aa2a136cce116f753933a7f6b25b9a4cd4bca577e11d

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