Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ded2b883c6bef21…

MALICIOUS

PDF

72.5 KB Created: 2022-04-11 22:34:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 6a33bbb51d4f4e615f5ca1d9b96bdec2 SHA-1: 9302719d89651ea7d0ba246082d215572fdbfe85 SHA-256: 4ded2b883c6bef2132d4ba3e0c57b4c9d6f38b2766f275b990b4fe02d4934187
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://www.proektes.ru/kcfinder/upload/files/wagitivokokilaja.pdf In PDF document text
    • https://landbar.com/app/webroot/js/ckfinder/core/connector/upload/files/bamodunidewonapevubowek.pdfIn PDF document text
    • https://gexuxufe.weebly.com/uploads/1/3/1/4/131406387/3519224.pdfIn PDF document text
    • https://fabupegux.weebly.com/uploads/1/3/4/6/134689396/398521.pdfIn PDF document text
    • http://embauchecadre.com/kcfinder/upload/files/beguzejejanuwazuw.pdfIn PDF document text
    • https://lixibagiz.weebly.com/uploads/1/3/5/3/135348296/livobuni.pdfIn PDF document text
    • https://lagumijomal.weebly.com/uploads/1/4/1/3/141343693/2adb391.pdfIn PDF document text
    • https://www.houseofwax.cz/kcfinder/upload/files/votevavazenux.pdfIn PDF document text
    • https://gosselindesign.com/images/from_fckeditor/fichiers/2378490184.pdfIn PDF document text
    • https://vexojuvij.weebly.com/uploads/1/3/4/3/134345090/nojemivijuremi.pdfIn PDF document text
    • https://nodepuje.weebly.com/uploads/1/3/4/5/134518199/3527923.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/70504447678.pdfIn PDF document text
    • https://sosawurezere.weebly.com/uploads/1/3/4/6/134670534/1134691.pdfIn PDF document text
    • http://www.farmaciabergua.com/userfiles/files/14239390795.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1621d64b70a8b3---gijadukajawulejiza.pdfIn PDF document text
    • https://podar.co.za/YmrXLWy8?keyword=how%20to%20store%20pool%20filter%20for%20winterPDF 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 extracted file (font_00_sfnt_off0000b317.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b317.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB317 10268 bytes
SHA-256: 8556df05c5d34ed5704f865c75bb12bdebbf7a8b60bfd5636701781862872149
font_01_sfnt_off0000ca49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA49 18588 bytes
SHA-256: c507d21a1791db8851d187b99deb7667abdf631fe760de5a651a429ccf70dd72
font_02_sfnt_off0000faa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1