Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ea8f4a1b741df…

MALICIOUS

PDF

70.3 KB Created: 2021-10-04 06:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 80f8c45ffa33657eb74fee31963b7845 SHA-1: f6820ab9c423fad9cc79c9fd51b8d9a6acf686d9 SHA-256: af2ea8f4a1b741df5dc56bb61f9b39e31f16dd9dc3fd0bf241649d934caf44a7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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.
  • 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://queure.ru/uplcv?utm_term=most+asked+questions+in+interview+with+answers PDF link annotation
    • https://mklaassen.nl/images/file/pavedumadojolazunev.pdfIn PDF document text
    • http://jagdrevier.hu/upload/images/file/fukusunokeravawiwovoxaza.pdfIn PDF document text
    • http://cukrarska-vyroba.cz/UserFiles/File/tofepufumelema.pdfIn PDF document text
    • http://synerfreight.com/syner_upload/images/files/11723901699.pdfIn PDF document text
    • http://nontaromclinic.com/ckfinder/userfiles/files/zajomaxixelanenujubupu.pdfIn PDF document text
    • http://kieryk.pl/img/userfiles/file/mepidi.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/81600349174.pdfIn PDF document text
    • http://bbfrontedelmare.com/userfiles/files/17238032163.pdfIn PDF document text
    • http://lagunarent.lt/ckfinder/userfiles/files/tarepupuxawopa.pdfIn PDF document text
    • http://inistor.com/ufiles/files/43500939412.pdfIn PDF document text
    • https://cobrawire.com/userfiles/files/6489718999.pdfIn PDF document text
    • http://polyacer-ecp.com/userfiles/files/20210930_112445.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614074de1072a---vudulisosegufulesiri.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/tebawipizaf.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16141cc19db808---78220214634.pdfIn PDF document text
    • http://websitesample.in/atlantis/assets/ckfinder/userfiles/files/tigafuwagovoto.pdfIn PDF document text
    • http://www.moyekolodin.com/files/66941187919.pdfIn PDF document text
    • http://autoklej.pl/app/webroot/media/files/62190086719.pdfIn PDF document text
    • http://prvugkh.ru/uploads/files/galurezup.pdfIn PDF document text
    • http://chiangmai-esc.net/user_img/files/dugejokukilusoge.pdfIn PDF document text
    • http://novosib-sport.ru/ckfinder/userfiles/files/puxinesepopujefik.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE76 17892 bytes
SHA-256: ff199671322d181e50047ecc7d5723650d2bfbb21e3b270a523fd4861cc0b9a4
font_01_sfnt_off0000db0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF322 10784 bytes
SHA-256: 348841a0df8674acf5fb4b9954ffda088eab8c34f355f6d10ccfd33fef63481d

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