Malicious PDF — malware analysis report

Static analysis result for SHA-256 191c34dc50f2bc91…

MALICIOUS

PDF

448.6 KB Created: 2022-03-19 20:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: cf47d5025aaa61e270ca504c6329da2f SHA-1: c3756683bb3d4029a97b72e80be39cb53a7c8326 SHA-256: 191c34dc50f2bc915f324f8a274cf5ce426c9d3b3e52131b305862be9a535a8a
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8708

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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 https://wirut.co.za/XSRYdR1H?utm_term=harmony+hall+piano+sheet+music PDF link annotation
    • https://cmflower-kkc.com/ckfinder/userfiles/files/ruwowigewuxejunifebila.pdfIn PDF document text
    • https://www.coltishallclinic.co.uk/dashboard/ckeditor/kcfinder/upload/files/kimebered.pdfIn PDF document text
    • http://cee1968.com/ckfinder/userfiles/files/24658105693.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e8e9595d29---bezadap.pdfIn PDF document text
    • http://www.historialmarista.org/js/kcfinder/upload/files/jejivaje.pdfIn PDF document text
    • http://mybooksite.net/kcfinder/files/digasijawezuvipitimijobaz.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e6b17a51dd---52283333071.pdfIn PDF document text
    • http://www.upratujemeinak.sk/admin/ckeditor/kcfinder/upload/files/xarudisewujeriv.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/81933539546.pdfIn PDF document text
    • http://secretinvitation.net/images/files/tevol.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621fa3c300f9d---mifobupejasako.pdfIn PDF document text
    • http://esrafisek.com/images_upload/files/7430474011.pdfIn PDF document text
    • http://ruihuitax.com/files/file/tonofafabepekixorifelaz.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/lisazogafopevij.pdfIn PDF document text
    • http://nceed.kr/pds/userfiles/files/80782588085.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/vubobopib.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fcfe9beda69---bowafugobawibawebik.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_off000692e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692E3 10844 bytes
SHA-256: 620b5980313b38ca1fbacfe678af3515194de3435a0cee53c86a4398de489757
font_01_sfnt_off0006abb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABB1 18872 bytes
SHA-256: 577381f837794360e4ddb4933c5c5e8c2fc693701c6d7db981c574e32f93ab2f
font_02_sfnt_off0006dd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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