Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5daa0e31011f534…

MALICIOUS

PDF

351.4 KB Created: 2022-03-28 03:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 6a122bb15c129b92bf89405763024b59 SHA-1: 9e6c1bd64d26892538dfe06896c3c8dcc9eb537d SHA-256: c5daa0e31011f534ed2d9dc81b507a152e01acd7e26d8105319367e784514b2d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7811

Heuristics 5

  • 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.
  • 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=veles+e+vents+catala+actual PDF link annotation
    • http://underbutter.cz/download/foto/40271108751.pdfIn PDF document text
    • http://jfhconsultancy.nl/userfiles/files/muwulotukujepevo.pdfIn PDF document text
    • http://dejonghenico.be/sites/default/files/file/20445712228.pdfIn PDF document text
    • https://timavoshipsupply.it/userfiles/file/58411199731.pdfIn PDF document text
    • https://reha.bg/content/upload/file/85422140860.pdfIn PDF document text
    • http://saraiaser.nl/userfiles/file/85423538218.pdfIn PDF document text
    • http://greenpeace.aboutgiving.net/sites/default/files/editor/file/40692488362.pdfIn PDF document text
    • https://www.scrs.in/kcfinder/upload/files/96489443210.pdfIn PDF document text
    • http://happyland-nsk.net/ckfinder/userfiles/files/wefol.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1621ab4bd6611f---34799836144.pdfIn PDF document text
    • https://a1-recruitment.fr/v2011/Files/fck_upload/file/59533852095.pdfIn PDF document text
    • http://choragwica.pl/userfiles/file/30233987465.pdfIn PDF document text
    • http://automotrizvasquez.com/noticias/files/94941303281.pdfIn PDF document text
    • https://schneider-rozetki.su/kcfinder/upload/files/91667666068.pdfIn PDF document text
    • https://unitytradefze.com/ckfinder/userfiles/files/74979049840.pdfIn PDF document text
    • https://angkajp77.com/contents/files/38405265511.pdfIn PDF document text
    • https://cevhertemizlik.com/userfiles/files/68034125453.pdfIn PDF document text
    • https://pmms-online.com/assets/file/vajas.pdfIn PDF document text
    • https://nhatthiengroup.com/files/uploaded/files/84550978697.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/magelisimub.pdfIn PDF document text
    • https://sowlindia.com/userfiles/file/xugidebujodixetomula.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/162033c143f120---luzoregusak.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_off00050e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E27 19912 bytes
SHA-256: 5832b583e32e8dae0316ac93802bb8fa50d623ca7b04be49e7b6f62f3706bca2
font_01_sfnt_off000540fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x540FB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005581b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5581B 10048 bytes
SHA-256: 622c23bdc2a2fae84c7e551467f48a9679fdbda4469f82f6761a3b1fa2aa49d4

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