Malicious PDF — malware analysis report

Static analysis result for SHA-256 af20b46d6eb44ea7…

MALICIOUS

PDF

78.7 KB Created: 2021-10-06 20:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 595fe8fb3680253a24f38609d0d7cda8 SHA-1: 55ce25bae88af51e306af99ef9d8118945b78668 SHA-256: af20b46d6eb44ea7242a0ee60218c322fd3bd6632716870c6ab98acbbe697916
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/xamilobirem.pdf In PDF document text
    • http://turskazka.ru/ckfinder/userfiles/files/taxagilunurojaxazudu.pdfIn PDF document text
    • https://ovistar-dz.com/ckfinder/userfiles/files/ruzopurumikexosi.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/wazunopa.pdfIn PDF document text
    • https://mecaniquekd.ca/upload/file/manudigetofuxikod.pdfIn PDF document text
    • http://maidichike.com/upload/files/pelofiruxetexowazag.pdfIn PDF document text
    • http://freeski.hu/freeski/file/89136836149.pdfIn PDF document text
    • https://pinkrali.com/calisma2/files/uploads/riwewoxofenejana.pdfIn PDF document text
    • https://mahanakhon.pacedev.com/ckupload/files/gosatetomalulazedajari.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/81186215555.pdfIn PDF document text
    • https://kanalprofi.at/UserFiles/file/wixapogunezebib.pdfIn PDF document text
    • http://nbc.com.vn/ckfinder/userfiles/files/64860613325.pdfIn PDF document text
    • http://tandartsindex.nl/images/uploads/83138659184.pdfIn PDF document text
    • http://wamaeassociates.com/images/uploads/originals/file/4327752843.pdfIn PDF document text
    • http://cosmoscm.com/contents/files/7683297491.pdfIn PDF document text
    • https://supermagnum-bg.com/ckfinder/userfiles/files/25365455403.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/nigolubaloguremis.pdfIn PDF document text
    • http://yoron.net/up/files/16505292897.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/padamifeludut.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/h4hvc4cu83c9bvi5p88g1ncgir/25302471674.pdfIn PDF document text
    • http://geerhannutpourreussir.be/docs/upload/files/lomaxivenila.pdfIn PDF document text
    • http://atel-j.nl/uploads/files/70023454503.pdfIn PDF document text
    • http://aktifmedya.com/dosyalar/files/lenajesuforafiruzolagigef.pdfIn PDF document text
    • http://nanchang.chinatupai.com/web/js/ckfinder/userfiles/files/xamafezogetabunotutomisu.pdfIn PDF document text
    • https://garraldaarquitectura.com/garralda_userfiles/files/bivij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=self+reinforcing+meaningPDF link annotation
    • 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_off0000cf0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0F 10488 bytes
SHA-256: 8ad55fca88d7c38e2e7512309dbfdf980c605ffea471c4f1e30730dbed6708bf
font_01_sfnt_off0000e6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000feef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEF 18028 bytes
SHA-256: 0d7adbb72ffbabb834ab33162718e03e54b3f5e9a254951e1e5d13219ecae276

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