Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2a674772b2fc86…

MALICIOUS

PDF

74.4 KB Created: 2021-11-10 12:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: c1b951e139a5c5524528405cdde93ce1 SHA-1: b40940f8c203ad2f092670288667e5f9542be530 SHA-256: af2a674772b2fc86e6822225e7e2b4c3c5b4890ceab3f29f5cf37c0538749c32
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ketchas.ru/uplcv?utm_term=graphics+and+multimedia+notes+pdf PDF link annotation
    • http://garderoba.sk/images/_file/34541215653.pdfIn PDF document text
    • http://harissarantis.com/userfiles/files/15610978157.pdfIn PDF document text
    • http://swaminarayangm.org/userfiles/file/bopubi.pdfIn PDF document text
    • https://dukra.sk/editor_uploads/files/10118946752.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/xexikurolosaxow.pdfIn PDF document text
    • https://aurorabersinar2.com/contents/files/bisemiwafejub.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/a852f232f9c87e4a7e0fa5cf3925891a/lurefukokos.pdfIn PDF document text
    • http://konferencii.org/web/uploads/assets/file/18535028746.pdfIn PDF document text
    • https://ottopianos.nl/files/93700109623.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614341d064f04---wolegisefuvaganubogolid.pdfIn PDF document text
    • http://pixel-pro.ru/upload/file/batovisajomuwutovusam.pdfIn PDF document text
    • http://kargiskola.ge/myadmin/ckeditor/ckfinder/userfiles/files/63549528839.pdfIn PDF document text
    • http://bugskin.org/userfiles/file/zixezakexomimig.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/vekirufezizerisin.pdfIn PDF document text
    • http://csim.jp/ckeditor/uploads/files/53807559938.pdfIn PDF document text
    • http://balony.dmuchance.eu/userfiles/file/31078394648.pdfIn PDF document text
    • http://medob.org/SITE/files/editor/file/loxufowi.pdfIn PDF document text
    • http://ipceurope.com/assets/file/bizoxosifadunefibi.pdfIn PDF document text
    • https://adeptos.clevercloud.pt/images/items/files/metigefaji.pdfIn PDF document text
    • http://goldmustang.com/files/files/gisusoluroponulobizok.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/60548010007.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/17004747569.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_off0000bea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA1 11024 bytes
SHA-256: f6a46d0ce625950f7f914e3268baacc553fd48c3986081df9f7b9b396af36c34
font_01_sfnt_off0000d819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD819 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off0000ef3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3A 17280 bytes
SHA-256: f0fdfb44a100176f124b05cfc6a0b9190680bd43f7c69728c103a0f1245454c0

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