Malicious PDF — malware analysis report

Static analysis result for SHA-256 634252de3e74e77c…

MALICIOUS

PDF

189.5 KB Created: 2022-03-08 00:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 82066f9bdee04ed70710d9c56268de3a SHA-1: a2e251630c993e9cf841056fe8dc40699a914cdb SHA-256: 634252de3e74e77c0db89e0ed5abf0dfb4bc450901652a669fc8383551de5481
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7912

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
  • 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.
  • 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://cafij.co.za/XSRYdR1H?utm_term=internet+explorer+10+free++for+ipad PDF link annotation
    • http://www.prodomasa.com/ckfinder/userfiles/files/86031626583.pdfIn PDF document text
    • https://hippodrome-compiegne.fr/www/uploads/file/40884423121.pdfIn PDF document text
    • https://safecampus.in/cmsCart/upload/file/tuniratidepetuxiw.pdfIn PDF document text
    • https://kupro.bg/upload/wyswyg/files/rebavik.pdfIn PDF document text
    • http://legalhouse.pl/files/files/zivosibofinenedub.pdfIn PDF document text
    • http://bappeda-jepara.org/app/webroot/js/kcfinder/upload/files/nufamav.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/162155a3f99feb---lanumuxawafinisixotevof.pdfIn PDF document text
    • https://ankaratutuncu.com/panel/kcfinder/upload/files/84955915726.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe473f4696e---62482483971.pdfIn PDF document text
    • http://tiquital.com/documentos/file/57025521291.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1643851798.pdfIn PDF document text
    • http://htrp.ru/kcfinder/upload/files/webabelanukitabekuv.pdfIn PDF document text
    • https://angkaganjil.com/contents/files/wimilelerawarufajoziki.pdfIn PDF document text
    • http://surinmajestic.com/phya/ckfinder/userfiles/files/60041577107.pdfIn PDF document text
    • http://cttinteriery.cz/files/upload/files/42496222236.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/bc5a3b3e0f79b89183b72ffbd445061c/75032554430.pdfIn PDF document text
    • https://5udua.com/contents/files/70852667434.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/49096156517.pdfIn PDF document text
    • https://grnca.org/img/files/files/3564812441.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1621edc58472c4---lomekapurogifolusi.pdfIn PDF document text
    • http://jsdarvin.com/files/84872725198.pdfIn PDF document text
    • https://www.systemswecare.com/admin/kcfinder/upload/files/bixobadevivikezopo.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16223b23341e17---gelalafajelitorusu.pdfIn PDF document text
    • http://undergroundspitters.nl/kcfinder/upload/files/53820923937.pdfIn PDF document text
    • http://holflorstudio1.cz/upload/files/wotumebupezugutirisiko.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/28132294614.pdfIn PDF document text
    • http://pinxedien.net/upload/files/27976026224.pdfIn PDF document text
    • http://kfbma.org/files/fck/file/96161049835.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents/files/70194167075.pdfIn PDF document text
    • http://musicfriend.vn/public/default/ckeditor/files/91284983867.pdfIn PDF document text
    • http://plafondchauffant.fr/img/user/file/tajusobibuxatik.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/bokedidijalusev.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/lopanirirurisezutirizof.pdfIn PDF document text
    • http://formasrl.com/admin/kcfinder/upload/files/muwuzawewupujipuxapegisa.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 extracted file (font_00_sfnt_off0002825b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002825b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002825b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2825B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00029976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29976 19144 bytes
SHA-256: 028486add8df09456ea46abd700bc42ef3fba3ab513fbd331fceaf2f827d5084
font_02_sfnt_off0002cc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC3E 10548 bytes
SHA-256: cd4f36505cfe57580c94fc44c6c2666a714c67899bf49c90791aca6f4955051a