Malicious PDF — malware analysis report

Static analysis result for SHA-256 af21f4a4df6abc67…

MALICIOUS

PDF

78.4 KB Created: 2022-05-20 19:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 607eb3fbc1c520ca2a1e20fea9880bd3 SHA-1: 7a9325dc9fa2e8ee1c2bea93514f6b4788850aca SHA-256: af21f4a4df6abc673933b9ca06efd7077700956843d75e83e2b73c86d30a9704
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • 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://lovig.co.za/YmrXLWy8?keyword=keto%20cookbook%20pdf%20downloads%20pdf%20downloads%20online PDF link annotation
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16217a97bb4a58---14569500212.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161f9bd863c728---robesenarur.pdfIn PDF document text
    • https://kompaspt1.com/contents/files/fepobumupirujorijoribude.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/55836293032.pdfIn PDF document text
    • http://www.pvvc.cz/files/gapejumakagezinaxagatevo.pdfIn PDF document text
    • http://salda.lt/saldus/kcfinder/upload/files/76277374897.pdfIn PDF document text
    • https://betamachinery.sa/other_files/File/64313934355.pdfIn PDF document text
    • https://techlan.pl/files/file/xanazifu.pdfIn PDF document text
    • https://privatdaniela.sk/upload/files/4048962283.pdfIn PDF document text
    • https://cncunse.com/d/files/bilamomodutogug.pdfIn PDF document text
    • http://metall-press.ru/files/42005096753.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/wufolozisomarale.pdfIn PDF document text
    • https://psychologgia.pl/Upload/file/nazezuxudewuvewox.pdfIn PDF document text
    • http://xn--80aafbladvtgxneccoge3bt.xn--p1ai/pict/file/80484066024.pdfIn PDF document text
    • http://miu.by/userfiles/22188884897.pdfIn PDF document text
    • https://maconlux.ovh/userfiles/files/rawulowexininadip.pdfIn PDF document text
    • http://iuppiteredizioni.it/kcfinder/upload/files/kevogewuwefolixinabu.pdfIn PDF document text
    • http://ppic.pl/www/js/kcfinder/upload/files/9424549748.pdfIn PDF document text
    • https://mallncart.com/userfiles/files/82920943796.pdfIn PDF document text
    • http://www.toptehnik.si/images/vixiwopusumimopulidolad.pdfIn PDF document text
    • http://chinajessie.com/seadata/data/uploads/img/file/164381457314.pdfIn PDF document text
    • http://futureinfashion.com/ckfinder/userfiles/files/nifiwakiwuroz.pdfIn PDF document text
    • http://boldogelet.hu/media/18073087130.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_off0000ca2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2F 10824 bytes
SHA-256: f70544c0aae23c242a84f5b3a488198f427e50b0ebcf650d56a2071ef2a255ee
font_01_sfnt_off0000e327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE327 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fb39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB39 17688 bytes
SHA-256: a3d95eaebb8e16238bc9355ed9dfdd10b7d6453a314dcc54f50f2c638150a60c

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