Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de9bb408e5e54b6…

MALICIOUS

PDF

244.4 KB Created: 2022-03-07 00:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 288cf7b201e00984afc02e83a78130e8 SHA-1: 49298e6cf2441d2b0596bb31b1002c4d713531ba SHA-256: 4de9bb408e5e54b6bd7a2fc4082cd43bf104d7c63c485bcabcc23a162d12ec57
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9705

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://cafij.co.za/XSRYdR1H?utm_term=windscribe+apk+for+android PDF link annotation
    • https://indolabtek.com/Uploads/userfiles/files/11007571006.pdfIn PDF document text
    • https://technopacific.cl/jamila/admin/uploads/file/12729659482.pdfIn PDF document text
    • http://www.alm-machines.be/kcfinder/upload/files/52712106899.pdfIn PDF document text
    • http://architetturaurbanistica.it/userfiles/files/95690876157.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/17949160937.pdfIn PDF document text
    • http://kim-clark.ru/files/file/53140769441.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/54893432776.pdfIn PDF document text
    • http://phubozena.pl/userfiles/file/50798739098.pdfIn PDF document text
    • http://alkord.kz/app/webroot/js/kcfinder/upload/files/peroxejoderasub.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/12833681908.pdfIn PDF document text
    • https://dassti.cl/admin/uploads/file/87978409936.pdfIn PDF document text
    • https://lacausedeslivres.com/userfiles/file/jogigezaw.pdfIn PDF document text
    • http://interreg-ipa-husrb.com/downloads/36458118059.pdfIn PDF document text
    • http://pibar.tw/uploads/files/202202230109531779.pdfIn PDF document text
    • http://hiddengemsbookstore.com/userfiles/file/25225018205.pdfIn PDF document text
    • https://oksushidelivery.cl/sitio/public/files/file/rutumuma.pdfIn PDF document text
    • https://vg42.ru/public/templates/kcfinder/upload/files/wanikux.pdfIn PDF document text
    • https://patoman.ro/ckfinder/userfiles/files/69157986437.pdfIn PDF document text
    • https://magicdiscoradio.com/userfiles/file/ragiboda.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 extracted file (font_00_sfnt_off00035b2a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00035b2a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35B2A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00037245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37245 21848 bytes
SHA-256: 14787ee653a0e3c402de708801971b73686681ec2e64171a070a9dc9a966c804
font_02_sfnt_off0003aba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3ABA4 10696 bytes
SHA-256: 50b190c57defc81e57de41588ef2c306bc05b50ca751fd47ed0eca925922f9a6