Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8436514c1b0340…

MALICIOUS

PDF

452.8 KB Created: 2022-03-08 03:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 9e132543276e6b7080e35881f39e1af2 SHA-1: 9edb4a6d3f242fbf892295430239a767a615d82b SHA-256: cb8436514c1b03405196d809322718954c8027658b0741ede95eec3bdbd7448a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5902

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://mifuj.co.za/XSRYdR1H?utm_term=focused+run+installation+guide PDF link annotation
    • http://shangyi-pump.com/uploads/file/061118375049.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1620fe9cee88bb---segoxekotifemetobes.pdfIn PDF document text
    • https://happycpdl.com/backend/web/kcfinder/upload/files/tokirofabul.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/96303314147.pdfIn PDF document text
    • http://bandodesign.com/assets/ckeditor/kcfinder/upload/files/tavelofonupamogi.pdfIn PDF document text
    • https://bednidhitraders.com/userfiles/file/kusipaxikenirevowedi.pdfIn PDF document text
    • https://www.xtraordinaire.org/web/kcfinder/upload/files/15529634952.pdfIn PDF document text
    • https://www.stock2morrow.com/ckfinder/userfiles/files/galepebakomanexifi.pdfIn PDF document text
    • https://clubselect.ro/ckfinder/userfiles/files/vesuxejeredudetogiw.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/24409559139.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/fokobozugotarunujob.pdfIn PDF document text
    • http://hrudolf.com/userfiles/35631615181.pdfIn PDF document text
    • http://designpavelzapletal.cz/files/file/vogezufosaxumidujuzuvot.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/vqk1uadb3o1780ma9boiso0067/13365771872.pdfIn PDF document text
    • http://blue-balloon.pl/files/files/lupetere.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/mitusutiwepatiwetene.pdfIn PDF document text
    • http://doanekeyes.com/userfiles/docs/31758129647.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16215369716747---tutesenovajediver.pdfIn PDF document text
    • https://icaiaa21.scrs.in/kcfinder/upload/files/56347734287.pdfIn PDF document text
    • http://chmer.yun2u.com/upload/files/19375052484.pdfIn PDF document text
    • http://tcpartners.vn/kcfinder/upload/files/xanisevelebozebuboz.pdfIn PDF document text
    • http://wimborst-ceramics.nl/public/view/upload/fckeditor_images/file/65107295486.pdfIn PDF document text
    • https://lpsa.cz/userfiles/file/konixebujaf.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/duwiminutadoziwelidi.pdfIn PDF document text
    • http://collectifff.be/imgdb/accueil/files/wemakesez.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/bomutivalenej.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_off0006a6a6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006a6a6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006a6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6A6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006bdc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDC1 17736 bytes
SHA-256: 1355913448b93eb44f7567fc936275cabebd8ab55a573b3cd16d248283b6c263
font_02_sfnt_off0006ec0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC0D 10624 bytes
SHA-256: db5ddf788efe20dc140a9ca1cffb2c4434ed22bb59431124c52cc0d414aa7d5e