Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f50281a00f0331…

MALICIOUS

PDF

286.1 KB Created: 2022-03-26 14:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: 109a4910add6f733feacf066b4a38f0e SHA-1: f9a44335733abb6d2623cfc284893c86bb4f7494 SHA-256: 98f50281a00f0331a30773a3a1d898e469ad87170c22b8f0346444b807731df9
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5647

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://nghiepvu.udicmanpower.vn/uploads/news_file/60189187434.pdf In PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/hrddae96sr9mft48lcu95gn1mc/gijubodawekobo.pdfIn PDF document text
    • http://sarvodurys.com/userfiles/file/55203937738.pdfIn PDF document text
    • http://jan-fotografie.nl/upload/files/97236767780.pdfIn PDF document text
    • https://piti.leaddeehub.com/userfiles/files/fokowokoxapijonudanulil.pdfIn PDF document text
    • http://hosteleriayvending.com/ckfinder/userfiles/files/mufod.pdfIn PDF document text
    • https://www.supergram.cz/kcfinder/upload/files/49764276068.pdfIn PDF document text
    • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/tevob.pdfIn PDF document text
    • http://eigo-manabo.com/app/webroot/js/kcfinder/upload/files/25230874291.pdfIn PDF document text
    • https://adilakaryakitnakliyat.com/kcfinder/upload/files/22438228085.pdfIn PDF document text
    • http://xn----7sbev0bhje.xn--p1ai/images/news/file/46499581242.pdfIn PDF document text
    • https://www.veskom-slovakia.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/51585525749.pdfIn PDF document text
    • http://overcomeproblems.com/images/files/xumesulotiro.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/79225179706.pdfIn PDF document text
    • http://shop-exclusive.cz/userfiles/file/pefipubi.pdfIn PDF document text
    • https://talaa-obour.net/webmisr/uploadwebmisr/file/rimizubakop.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/13018167856.pdfIn PDF document text
    • http://rhondachem.com/d/files/94653588357.pdfIn PDF document text
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/pexagoferowerebudididu.pdfIn PDF document text
    • https://qamous.net/kcfinder/upload/files/92372961972.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16205b77df0ecb---41867086975.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/sl8ccmgm6lski168ei2cd73tp0/jupujifajud.pdfIn PDF document text
    • http://lunaleo.pl/userfiles/file/guzavizulonujagamenimis.pdfIn PDF document text
    • https://pecsikult.hu/files/file/ketexelav.pdfIn PDF document text
    • http://arborspringsforestry.com/img/files/sekiguturofi.pdfIn PDF document text
    • https://balatonfurediallatorvos.hu/userfiles/file/goxulatozor.pdfIn PDF document text
    • http://auto4-spb.ru/public/images/ckfinder/files/20235359459.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/a94613214fadfc2c45e401b5e05880e9/musemoderixavare.pdfIn PDF document text
    • https://sprzedazmiodu.pl/files/files/82162494829.pdfIn PDF document text
    • https://infinity-c-t.com/userfiles/file/10645267079.pdfIn PDF document text
    • https://www.ogsb.org/asset/ckeditor/kcfinder/upload/files/xuduso.pdfIn PDF document text
    • https://freebcard.com/ckfinder/userfiles/files/33906794919.pdfIn PDF document text
    • http://moskvaznaet.ru/upload/files/10733508540.pdfIn PDF document text
    • https://ontozescentrum.hu/tmp/ruxajirazakikesutal.pdfIn PDF document text
    • https://csodamalom.hu/files/files/lugeweba.pdfIn PDF document text
    • http://robvancampen.nl/userfiles/file/novijusizufugagejulubimop.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f98b5867dfaf55fb5a57a7d9e579d2dc/govujenenepuwu.pdfIn PDF document text
    • http://tuv-zimer.co.il/assets/userfiles/files/lalifaxin.pdfIn PDF document text
    • http://geekladsmedia.com/admin/ckeditor/kcfinder/upload/files/minitinibusuvigelajif.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=tacklife+cm01a+digital+clamp+meter+mPDF 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 extracted file (font_00_sfnt_off000407e1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000407e1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000407e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x407E1 10800 bytes
SHA-256: 34cde0a7166a3a850974f0a1ad8a237cd5116c9a8d3d1871c8a58a682067bd27
font_01_sfnt_off000420a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420A0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000437bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x437BB 18468 bytes
SHA-256: a77777031cc75219f1e01a32fb7c91a7f3db15719baca796f77bf9950134d7c6