Malicious PDF — malware analysis report

Static analysis result for SHA-256 af294a81fdba220b…

MALICIOUS

PDF

77.9 KB Created: 2021-09-21 17:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: c88f851a69403cf4574f13acc617376a SHA-1: b5987995f6ef3788a88898006fae41301173fed3 SHA-256: af294a81fdba220bfb7b3fe6d1d82513546c50138cf9edf491fdbe8c57014180
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/b5d2845f0ec8abab5f3a5b35eccf5618/94529490003.pdf In PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613bf55ebb9cc---dugodu.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/dumovet.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16145fb836dc07---noduderezavojutamemit.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/96425948770.pdfIn PDF document text
    • https://glory-aqua.com/userfiles/file/41564366193.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/durofuwomaketivigevedev.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/livogeriwutox.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/66419767784.pdfIn PDF document text
    • http://longruiglass.com/ckfinder/userfiles/files/20210918_174926.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/331a438cc842a41e7829bc080e405cb0/luvijijeferivulotuladis.pdfIn PDF document text
    • http://ilonew.tasksplan.com/ckfinder/userfiles/files/14727207922.pdfIn PDF document text
    • https://edusfera.pl/upload/file/jizelutezobozakan.pdfIn PDF document text
    • https://bestcaps99.com/ckfinder/userfiles/files/kepedenavufawez.pdfIn PDF document text
    • https://danfort.lv/userfiles/file/77555510013.pdfIn PDF document text
    • http://ls12368.com/userfiles/file/45801879828.pdfIn PDF document text
    • http://bbdecontra.com/userfiles/files/xizifusumidajamepa.pdfIn PDF document text
    • http://kalkulacka-hypo.cz/userfiles/files/93756698777.pdfIn PDF document text
    • http://www.performhabitat.fr/bundles/astadmin/js/ckfinder/userfiles/files/pojisewivadufimirikaz.pdfIn PDF document text
    • http://www.santabriganti.org/admin/ckfinder/userfiles/files/soletazove.pdfIn PDF document text
    • https://wic-net.com/userfiles/file/90107070324.pdfIn PDF document text
    • http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/71688666291.pdfIn PDF document text
    • http://hexindechem.com/upload/files/jumuzolenelusesufapejixaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=sega+cd+for+androidPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138cdfd845dd---22388990797.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_off0000cdbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDBD 10412 bytes
SHA-256: aa8571cd685c3d60b698e5e54241325daa26eb5c5ff88038d33d2f88ca800d78
font_01_sfnt_off0000e533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE533 17584 bytes
SHA-256: 9da8d07328d950442dee2aef53737005a8242579c29cfd2a9624c0c532808994
font_02_sfnt_off00011278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11278 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1