Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c904261b77b2b6…

MALICIOUS

PDF

317.4 KB Created: 2022-03-06 05:38:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: c60db3f4145e229d0a26cb2b0c88083e SHA-1: eff9d616662c62af01dfef2c8ffd4a527156fcd4 SHA-256: c0c904261b77b2b6e3e262567fd83c18bd6be1681b09667f1be3e2d6db60e72c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8842

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 http://reklamnizbozi.cz/data/upload/files/jonojixozadob.pdf In PDF document text
    • http://millvalley.com/wysiwygfiles/file/79390424226.pdfIn PDF document text
    • http://neoclassicalmansions.com/uplds/file/jogagizux.pdfIn PDF document text
    • http://rialta.ie/userfiles/files/mizuvivixu.pdfIn PDF document text
    • https://sinarlangit1.com/contents/files/96313067111.pdfIn PDF document text
    • http://yaolankungfu.com/kcfinder/upload/files/58627601407.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2022-02-23/images/files/zeluzuvoweto.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/2352584075743fc8c599a106d0db67b1/15859843681.pdfIn PDF document text
    • http://quantri.thaisonpalacehotel.com/upload/files/82779810630.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/58163295660.pdfIn PDF document text
    • https://kipass.fr/userfiles/file/gajunejotirewuneru.pdfIn PDF document text
    • http://rcchoir.nl/upload/files/jidiwosowasejetuziwagabaf.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/91779440367.pdfIn PDF document text
    • https://yapluka-services.fr/userfiles/file/16808492244.pdfIn PDF document text
    • http://systempro.kr/userData/board/file/84568889054.pdfIn PDF document text
    • http://private-dev.cliczone.fr/upload/userfiles/files/wezopidigowikojox.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/mifilu.pdfIn PDF document text
    • https://hladiagnostico.com.br/kcfinder/upload/files/20420197768.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/bugebulojesefifojexaguda.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=volcanoes+earth+shattering+news+answersPDF 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_off000483c8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000483c8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000483c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x483C8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00049ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AE3 20076 bytes
SHA-256: 0eb322090dd71c8b282021763afe9bd5841a2facbcfb3ffcc4c01aee0570d5c9
font_02_sfnt_off0004ce82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE82 10564 bytes
SHA-256: 41594c0c5489c7820c759fa3e3bcfab5254ffae1d9aa5c26ba6ae6755704618c