Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd79df918a8821c9…

MALICIOUS

PDF

66.2 KB Created: 2020-11-14 01:04:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: a6450ba763e7f9f8074d7991729cc2c2 SHA-1: 529ca73c5db54b199a9857c39f67c70383bbb775 SHA-256: cd79df918a8821c9ecaa47d45a4299d749eb57a7627afae34260c87dfb58bba5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/123?utm_term=deep+river+chips+vegan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407777/normal_5fabd43fc84b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389387/normal_5f99e0bd1f1da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/fifty_shades_of_grey_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746ecc6b-cd96-4b1b-8f86-96c9ea9da0cf/gexelipuzagakopazidebodep.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/muvonukepisegu.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/remenabi.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/jefekibexoxevugiluma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6c9085-60aa-4f26-af9f-04d55c3b1ef6/gobedebunobipefiruxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad320c2-3205-4868-9a10-96438dabde99/70200771569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/256d30b8-2145-48db-9e51-73ee1b4fb21d/kitaziwikiraterevaniwiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/78305919413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeeaf33d-a85d-4c7d-b467-9b9f290c2790/68205158497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca8172d3-89fd-4a82-a6d0-e12faca43c5b/dewalt_dw703_used.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_off0000c576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC576 5224 bytes
SHA-256: 237c30f8cc2f4e7f619c18e5f1a4fda5530791882ce1504b9f2e5701df8a7952
font_01_sfnt_off0000d745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD745 10912 bytes
SHA-256: 63f5a86ff18b5b06e82e696dbe9e86245cbb7a8f86faf7b4bd1cf93e569f93eb