Malicious PDF — malware analysis report

Static analysis result for SHA-256 191099669d1d7792…

MALICIOUS

PDF

258.0 KB Created: 2022-01-10 12:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 6ea1771d8c341994392710d8dc41429d SHA-1: eeb599c649249566111f999f69693a067f23eb34 SHA-256: 191099669d1d779292fed59cdeb1ebdb87d42b6dc6baed9b411fe258a6672199
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

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://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161a244ae5c07a---tuboletonarebezemuj.pdf In PDF document text
    • http://chothuexehochiminh.com/userfiles/file/12529913847.pdfIn PDF document text
    • http://wirtualnekorepetycje.com/Upload/file/98391895660.pdfIn PDF document text
    • http://netmode.net/app/webroot/uploads/files/39349947646.pdfIn PDF document text
    • https://harom.ro/files/file/jofupoverukitavimifetuz.pdfIn PDF document text
    • http://mtcnx.com/upload/fckimagesfile/70227335652.pdfIn PDF document text
    • http://cimkezes.hu/uploads/ckfinder/userfiles/files/xodukeletumofovewolanip.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/9070972270.pdfIn PDF document text
    • http://msmzizkov.cz/data/dokumenty/lugagurejatozol.pdfIn PDF document text
    • https://aedwea.com/upload/foto/9235446502.pdfIn PDF document text
    • http://dintainoodle.com/uploads/files/31408659005.pdfIn PDF document text
    • http://z-sinpro.com/upload/files/koxerapose.pdfIn PDF document text
    • http://aguito.madteam.net/ckfinder/userfiles/files/pepesevid.pdfIn PDF document text
    • http://wiskind.com/filespath/files/20211230175243.pdfIn PDF document text
    • https://penal-garazh.ru/files/27674854810.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/tgp7mmlgo3srket1ip33947i73/kukoremoj.pdfIn PDF document text
    • https://netcsemege.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/gorafagogosorebe.pdfIn PDF document text
    • https://palet-school.com/files/files/tenebigaxigi.pdfIn PDF document text
    • http://riverbayvinhyen.org/kcfinder/upload/files/76127457476.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/61573595411.pdfIn PDF document text
    • https://adverto.ee/userfiles/file/vamuwavawodotuzeru.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1614b76e04b709---79700218519.pdfIn PDF document text
    • https://libertavoyages.com/kcfinder/upload/files/95100145223.pdfIn PDF document text
    • http://uveteknik.com/uploads/files/70453475977.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/db0f850c3b6c842de65d092de6d334ca/nifuvezawazokir.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/cmwvf4RlXg4/uplcv?utm_term=public+finance+and+public+policy+pdf+gruberPDF 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 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_off000393e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x393E1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0003aa80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AA80 20648 bytes
SHA-256: 0150a3a9147d961d8196c28a63769723b421996c9197e1bfe8ad558b94baacf9
font_02_sfnt_off0003df7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DF7D 10884 bytes
SHA-256: 4557ed101632c9c1650d4259f47fb96e24f743de2ac22c760a885695c13be954