Malicious PDF — malware analysis report

Static analysis result for SHA-256 79351f757dfcc32d…

MALICIOUS

PDF

312.8 KB Created: 2022-04-26 07:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 92b69356518bc3a5f6ba839ffbd5b571 SHA-1: 140c8cd8cd3998fb83a6d71c0a155095b2ff4265 SHA-256: 79351f757dfcc32d47ff82d801eabbdf81bec6917f1fa670672a8a1a83908255
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9467

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://tevav.co.za/XSRYdR1H?utm_term=aggregate+impact+value+test+report PDF link annotation
    • http://0-50.ru/userfiles/file/9781583379.pdfIn PDF document text
    • http://ptd-tver.ru/content/files/upload/files/41438005523.pdfIn PDF document text
    • https://dnmpaint.com/sdcc/images/file/49760294336.pdfIn PDF document text
    • http://nextlab-semi.com/files/fckeditor/file/fofonofotuvifekuv.pdfIn PDF document text
    • https://innovaciones-plasticas.com/imagenes_cont/sitio/documentos/97233069559.pdfIn PDF document text
    • https://ziloboze.weebly.com/uploads/1/3/2/6/132683463/3876210.pdfIn PDF document text
    • https://xemukawigop.weebly.com/uploads/1/4/1/5/141558583/nuzatalujoruletulu.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/bugewilikofakofa.pdfIn PDF document text
    • http://flairpens.ru/uploads/files/nufademasatesipisaguwaj.pdfIn PDF document text
    • http://www.pvvc.cz/files/79562441258.pdfIn PDF document text
    • https://degexaxi.weebly.com/uploads/1/3/1/4/131406510/detitafavivikag.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/46161693638.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/bu6qadqobjeo2h2ke29vg644bv/84430436645.pdfIn PDF document text
    • http://thanhthien.com/upload/tt2016/files/bulafopukezadotolorosetig.pdfIn PDF document text
    • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/vewanipakud.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_off0004754d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4754D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00048d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D64 10760 bytes
SHA-256: 0a50c8090c41ea1f2004503f2dd5a805b44bd54413b2c949859f90db18b6cd25
font_02_sfnt_off0004a636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A636 18068 bytes
SHA-256: 337172aeb3447b97fc133b6b750ba6c433e9e2d21a15c747a1d7bd9015a16639