Malicious PDF — malware analysis report

Static analysis result for SHA-256 191fc4dabf33be81…

MALICIOUS

PDF

367.9 KB Created: 2022-03-25 01:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 2f25fe566d7dc48fe9ebc96bc35ac9b9 SHA-1: 10f1c5d212deef53e3691b7b5f8f43b019cb5b54 SHA-256: 191fc4dabf33be81b127e658d2aa6c9fa3f0488b1641fdd3402ec9069e666a56
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7677

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://colod.co.za/XSRYdR1H?utm_term=gardner+bender+gdt-311+instruction+manual PDF link annotation
    • https://fainitelecommunication.com/public/editorfiles/file/67929240701.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16234f23d75cd3---kagafunikugibim.pdfIn PDF document text
    • http://sdv.sk/userfiles/articles/file/gegebobesezugufimoxasifu.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/59887756202.pdfIn PDF document text
    • http://astprom.ru/sites/default/files/file/16635539157.pdfIn PDF document text
    • http://www.mousumibanerjee.com/fckimages/file/fadulesudefuk.pdfIn PDF document text
    • http://avgustal.ru/kcfinder/upload/files/29828351730.pdfIn PDF document text
    • http://www.siphonicflowmandiri.com/upload/files/6312662510.pdfIn PDF document text
    • http://wskinbody.com/data/boardData/files/pesagof.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/8d3b2475253e65d7da75932efa58fdbb/64798909410.pdfIn PDF document text
    • http://diagnosticaedilizia.com/userfiles/files/sovekitabaniketimitaji.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1623af9da50cb3---12644617890.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/162360a9b86edc---45038196038.pdfIn PDF document text
    • https://equimat-cheval.fr/file/gabamevetiwaf.pdfIn PDF document text
    • http://www.limestem.com/ckeditor/kcfinder/upload/files/manusevozined.pdfIn PDF document text
    • http://genesisglobalbd.com/assets/ckeditor/kcfinder/upload/files/37897415947.pdfIn PDF document text
    • http://pinboulevard.com/file_space/files/tawakelobimipevofawulile.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/85fc1022b3884530bed57cfb69392865/pakumovuxarewitovujivub.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/36093678356.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1621c92fb8a9fc---87856225395.pdfIn PDF document text
    • http://poledance-chrudim.cz/files/file/43537005778.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_off00055040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55040 17452 bytes
SHA-256: cd3d9ac9b2821e3ad6d7a5bcb742f8b0d03e2f1f7b53c2e0af34116f99aa7a75
font_01_sfnt_off00057dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57DDE 11248 bytes
SHA-256: 3e513056a4b0fb483846075881d60bd72deadc83c5289484bbf94db034b34956
font_02_sfnt_off00059825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59825 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9