Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb85fabe94511286…

MALICIOUS

PDF

528.0 KB Created: 2022-03-13 00:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: cb4c681cc0ec900b4a3af034ebb66a37 SHA-1: 1dedb4a0e0793c172b2abcc0257b3dc3d91c4ae0 SHA-256: cb85fabe945112865432510b20ca60c1e03bbcee7e29496e73e21f043d468dda
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7736

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://beleznayauto.hu/galeria/pictures/35542171407.pdf In PDF document text
    • http://dentish.ru/ckfinder/userfiles/files/gepubovafif.pdfIn PDF document text
    • http://linza-market.ru/upload/files/dabopofil.pdfIn PDF document text
    • http://members.lurnteam.com/js/kcfinder/upload/files/kozovijoboxusaderawosuv.pdfIn PDF document text
    • http://fluitec.fr/ressource/site-image/files/wivaju.pdfIn PDF document text
    • http://muzeumostrowiec.pl/obrazy/file/lirozujekonavi.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/38720280436.pdfIn PDF document text
    • https://www.kidilangues.fr/js/kcfinder/upload/files/tozesamufezomu.pdfIn PDF document text
    • https://www.officinasapori.com/_admin/kcfinder/upload/files/nevesizufawifiwurafida.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/88851465343.pdfIn PDF document text
    • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/lirajijidudirariruwon.pdfIn PDF document text
    • http://letnipohar.cz/upload/file/talezeresepineset.pdfIn PDF document text
    • http://liily.jp/upload/file/20220301000959.pdfIn PDF document text
    • https://manhalhealing.com/userfiles/file/1886666089.pdfIn PDF document text
    • http://jyy.jp/ckfinder/userfiles/files/20220217_060007.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/18127257461.pdfIn PDF document text
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/28303910792.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/35584216755.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/162019666a22b1---wugefufe.pdfIn PDF document text
    • https://mar3ol.com/Files/files/52152999186.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=ben+10+online+games++pcPDF 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_off0007cbe1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007cbe1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007cbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBE1 20396 bytes
SHA-256: 50e58cf94e020ace904c7e5164996cbb1d29bb7b32df49fa39156833d4f6a7a9
font_01_sfnt_off000801df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801DF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000818ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818FF 10748 bytes
SHA-256: 8cc6bcda5a5e63fbe91c57051eadf88e9c4fabbb3c4e8f2f1725302a4a0adbab