Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8784b0b3fbdfc48…

MALICIOUS

PDF

72.1 KB Created: 2020-11-10 18:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 15d3307c1de2766bb0f2b30dbc411040 SHA-1: 25840f427a6b3a0bebe3a8298267e0998818cb08 SHA-256: f8784b0b3fbdfc489a5dd23ae8312a556c6195788e4b9558d4b54eae0e0761ff
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://trafffe.ru/wb?keyword=attack%20of%20the%20clones%20online%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5f999c77deb97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5f8fe767637cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5fa2ad722357e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389581/normal_5fa7a4de76b2a.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/kavalukato/53610905729.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/17634909648.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/tukebajiximotudipok.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/tank_trouble_z.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/wuwemewawimedikiguzo.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/65133144673.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/firoxagopomezete.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/67192019403.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/bsc_mathematics_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/excel_2020_operational_budget_document.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/4005280627.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/91573779804.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/32264144022.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/62580676759.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_off0000d04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04E 5024 bytes
SHA-256: a5dbc860dccbcd184aef03a331be95d832b38e54f7858e4afafb139bb5d43c59
font_01_sfnt_off0000e15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15B 2240 bytes
SHA-256: e34ea6b949d0caf1dd5ee7795971a8cbb2fc66b6c20ad32415fff043e66ce372
font_02_sfnt_off0000eb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB74 11524 bytes
SHA-256: f689f0667201ae0c2aefdc93dcdbd745ad3dc240b7b8b9c3620fdc5b4b5d7853

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