Malicious PDF — malware analysis report

Static analysis result for SHA-256 af24479642c57d4d…

MALICIOUS

PDF

36.8 KB Created: 2020-10-05 11:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 5193a71328321923eabec6bbc46cd960 SHA-1: 646bc082308aecc72a2fe26d597f8abb0eaffa01 SHA-256: af24479642c57d4d5d3de8747401533b7b8e44efb8240edd68a2ca92ffeb7abd
134 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=ygs+de+%25C3%25A7%25C4%25B1km%25C4%25B1%25C5%259F+temel+kavramlar+sorula In PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/xugizajejotobipatujefutew.pdfIn PDF document text
    • https://site-1037061.mozfiles.com/files/1037061/24077180458.pdfIn PDF document text
    • https://site-1037075.mozfiles.com/files/1037075/ditogelux.pdfIn PDF document text
    • https://site-1043090.mozfiles.com/files/1043090/60908879757.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/1/0438/4263/3890/files/numawidufibazov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5210/5881/files/20992762199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0813/7115/files/direct_primary_definition_and_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e52786f6-4379-460a-aa60-1be3ff0feb91/nomuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa7f984-4106-4d83-803f-677b811f45ec/41411941700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ee6e950-3108-41f6-b4ff-33695ae44e83/54060364840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/211b9249-3234-4421-b82b-b550b00b95fd/25635110118.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_off00004db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB3 5692 bytes
SHA-256: d3291d65dcfed78e5676b45df187d9e1bba17712d1ff1ce5c5a4108c152a2e24
font_01_sfnt_off00006062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6062 11328 bytes
SHA-256: da458e4cb546651e8348542c69c884cc73cbf839dd44e1d33743841616cfb0f1