Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4355d4104154d0…

MALICIOUS

PDF

311.4 KB Created: 2022-03-25 03:19:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: f1da5dabd07a7545a1548d11349dd652 SHA-1: 9b593cd150e325166531ab504eeb9152bf9094ef SHA-256: de4355d4104154d061785de59acf4d8b78fbf7b318c13236e9174ce6b7c044d1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8480

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://ragaz.co.za/XSRYdR1H?utm_term=kali+linux+pdf PDF link annotation
    • http://yisin.tw/userfiles/file/muwodofafibatatedewew.pdfIn PDF document text
    • http://applyforloansnow.ca/site-uploads/jozifenemorapoloxusoxemuk.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/97638130728.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621486f7e5a3b---silut.pdfIn PDF document text
    • https://minsk.markiza-trade.ru/admin/ckfinder/userfiles/files/dowizodunofunogalubobuxi.pdfIn PDF document text
    • http://sumisaedu.com/FileData/ckfinder/files/20220207_8E649DE8066A468C.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16211a9a91f100---kozobijeginipavedufudi.pdfIn PDF document text
    • https://www.worldpco.org/includes/js/ckeditor/kcfinder/upload/files/jaxarowowuvagomizevula.pdfIn PDF document text
    • http://rztria.ru/kcfinder/upload/files/62222643559.pdfIn PDF document text
    • https://tebra.si/userfiles/file/xanododoza.pdfIn PDF document text
    • http://www.guidanceias.com/assets/files/plugins/kcfinder/upload/files/64787289187.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/bixidikotalagaxibif.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/vuwavizi.pdfIn PDF document text
    • http://nbteks.com/resimler/files/tojovaxidazuvalobev.pdfIn PDF document text
    • http://henghuitong.com/jingkelun/userfiles/files/20220311132650.pdfIn PDF document text
    • http://hajostanfolyam.hu/admin/kcfinder/upload/files/kepaketokaxuzerefaris.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/897965948c1f123b7974b7d7479dbda8/93714340104.pdfIn PDF document text
    • https://hotelexpert.ro/uploads/files/wobisuvupizivarirejomizi.pdfIn PDF document text
    • https://leanuslab.com/UserFiles/file/71010323651.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/267n453g8sf92feubjafk8ecei/nufameguxusivuvutima.pdfIn PDF document text
    • http://interroadholland.nl/userfiles/file/binutopatav.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_off000471bb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000471bb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000471bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x471BB 18340 bytes
SHA-256: cf8b9ee66cabb287a01b4082096c2956d3ce18eedecf8ba3f40de9cea089076b
font_01_sfnt_off0004a1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1C1 10068 bytes
SHA-256: bf5eb59fc0c3ad7aaae2310af429a7942c2d4ce7fe1df66be41e0f9a1d7c29cd
font_02_sfnt_off0004b82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B82B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9