Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99d8c1433ec8cbe…

MALICIOUS

PDF

367.8 KB Created: 2022-04-09 00:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 50b79f9a3f4f1491d71f83d855b750e5 SHA-1: 4bf931b772d973e156ac619365a3c5f9e719b310 SHA-256: f99d8c1433ec8cbea46c814914b0967bdc2e1df2799db7c25c9b1838b4c46fa2
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6448

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.
  • 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://norin.co.za/XSRYdR1H?utm_term=best+person+to+marry+in+skyrim PDF link annotation
    • http://idroter.org/userfiles/files/9392309586.pdfIn PDF document text
    • https://rufajesovulibo.weebly.com/uploads/1/3/4/2/134235528/8d96a233d8b8e6d.pdfIn PDF document text
    • http://sb555.com/photo/file/vorivogipamuxodedoxe.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16249c765bc6f6---xevidizovupotezosolanar.pdfIn PDF document text
    • http://ndt-ultratech.com/files/75457717632.pdfIn PDF document text
    • https://zopewurexolo.weebly.com/uploads/1/3/4/5/134519391/dikola_tekumogasiv_rimevupemivoxi.pdfIn PDF document text
    • https://tuzufivogov.weebly.com/uploads/1/3/7/5/137518576/68846a1a2d9965.pdfIn PDF document text
    • https://vumufivazoxowe.weebly.com/uploads/1/3/4/4/134467728/fojeranine.pdfIn PDF document text
    • https://movogabi.weebly.com/uploads/1/3/4/8/134881325/tajipov-tupoberowo-renoxapom-sisilun.pdfIn PDF document text
    • https://midlanddevelopers.com/backend/web/kcfinder/upload/files/11420570094.pdfIn PDF document text
    • https://madaremowigefin.weebly.com/uploads/1/3/2/6/132681361/9493403.pdfIn PDF document text
    • https://gijowazav.weebly.com/uploads/1/3/4/0/134097260/33d8150853ac031.pdfIn PDF document text
    • http://talleresjpg.es/img/file/wopabofixivewogovonano.pdfIn PDF document text
    • http://tweddlefoto.com/files_contenidos/upload/files/18252489348.pdfIn PDF document text
    • https://87tunghia.com/upload/file/94108304801.pdfIn PDF document text
    • http://angelascanu.it/uploads/file/zafixawudevafonigepa.pdfIn PDF document text
    • https://tusunupo.weebly.com/uploads/1/3/4/5/134507020/niludebu.pdfIn PDF document text
    • https://tusaluzope.weebly.com/uploads/1/3/4/3/134374665/3598522.pdfIn PDF document text
    • https://foodphotoshop.com/userfiles/files/sutibupesesin.pdfIn PDF document text
    • https://nubukagogurug.weebly.com/uploads/1/3/4/4/134495847/8548799.pdfIn PDF document text
    • https://vaputonusodi.weebly.com/uploads/1/3/4/4/134493057/fa9ee.pdfIn PDF document text
    • http://dentalweek.eu/userfiles/files/bifajo.pdfIn PDF document text
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/pefujubibamir.pdfIn PDF document text
    • https://fisujurij.weebly.com/uploads/1/3/1/4/131437504/c1dab17cf4c.pdfIn PDF document text
    • https://wojuguzibuliru.weebly.com/uploads/1/3/4/8/134896427/detasudowoti-zasagi.pdfIn PDF document text
    • https://jofukesor.weebly.com/uploads/1/3/3/9/133999831/97bbc1.pdfIn PDF document text
    • https://spvi.cn/filespath/files/20220404041145.pdfIn PDF document text
    • https://zakutawevuvukug.weebly.com/uploads/1/3/5/9/135970657/tijotekuruso.pdfIn PDF document text
    • http://psychologyforeverybody.com/ckfinder/userfiles/files/zavaxolutoravi.pdfIn PDF document text
    • https://fkip.unsam.ac.id/kcfinder/upload/files/32452131906.pdfIn PDF document text
    • http://logtech.cz/foto/Image/file/bodotafaxalizugunolaref.pdfIn PDF document text
    • http://lk-atomexpo.ru/web/js/kcfinder/upload/files/gujijenotiwoj.pdfIn PDF document text
    • https://nagafijobe.weebly.com/uploads/1/3/4/6/134621550/jitoxizikasujaf.pdfIn PDF document text
    • http://forti.in/userfiles/file/5908895010.pdfIn PDF document text
    • https://polenhosting.com/calisma2/files/uploads/44752943387.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_off00054ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54EA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000566b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566B4 18300 bytes
SHA-256: d95248f99717b794bcc0dcaf1c9b0f439be4f5dff6e5bd9c5bc804043d944f0d
font_02_sfnt_off000596f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596F4 10624 bytes
SHA-256: 540f03ebb1ee481851634af9bab372ffec8f6735f3fb6ce392139c7c7e90c984