Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db724ef43edcd5…

MALICIOUS

PDF

79.4 KB Created: 2020-11-30 19:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: d4d358ccc2f897b0d65cc86c72148666 SHA-1: 349c07310e35a7ecd09fbbacac1c19725fce877a SHA-256: c5db724ef43edcd5d2512e1a14b1d1863f182caa8016c2c464479e4fc484c84b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=momo+yaoyorozu+winter+costume PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377936/normal_5f948305a2e96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_5f8a975ae158d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5fb4e585c2a9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5fa7d6c8ca1a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8d5c4166a15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449177/normal_5f9f9111a0c51.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/d66f65d8-4f54-4a28-a5b4-54d22c603e8a/the_teachings_of_jesus_listed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066f1c7d-dd92-4d17-a10b-3bbb5de2a230/6545717977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5a75986-5339-4e62-8650-ecb605a9ded6/33862142979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/087fa4e1-90ca-428f-ae8b-d5558c6fd5ee/wajerivotaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc58668-5234-42f0-adb3-be3f543b2184/wileto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee76774b-b9c8-40ab-abe7-09428cc2563f/murach_s_php_and_mysql_3rd_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fac3d90-5736-49d4-a2ab-e3e64950ac5e/84264203253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129d2218-3103-42bf-b90b-e01185dfe375/51741226175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a7b424-a78f-4fb3-a535-a1d27e12d696/jarasetumev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56957fb5-11fd-471e-a95b-e12ff6428bd2/25627952967.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF18 7744 bytes
SHA-256: 64dfb5f4f7cee9dfd75d1600fc9377d814a3524e045b5c1910e4b9842e8c399c
font_01_sfnt_off0000f93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93D 5164 bytes
SHA-256: 27fe6285ece60195d1274dff651f2c18974d94d50bc638e818efcecdba530e4a
font_02_sfnt_off00010ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADA 11216 bytes
SHA-256: 90a17efd59769d4de93fb57877aa6192936a845abad0ce370f39e059f1d861fc