Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d63cb938df9dbfe…

MALICIOUS

PDF

107.8 KB Created: 2021-02-26 00:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 214d300917af4ce360af596f3c679c03 SHA-1: 24666bf548d681f2b7ff83f3ee4732b3bea6b8ae SHA-256: 5d63cb938df9dbfe70c3ae3c0daca90d227db15292e1dc1b509991bd937d3e11
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL, https://leonvi.ru/award?keyword=les+miserables+stage+musical+script, is the primary indicator of compromise, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9626

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://leonvi.ru/award?keyword=les+miserables+stage+musical+script PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426270/normal_5fceb52507b5b.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/noximogiwunok.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/fifty_shades_freed_movie_where_to_watch.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/16134953806.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448137/normal_6005e5623930f.pdfIn PDF document text
    • http://frontend-developer-azaynullin.site/vamobajuroxedojoxuwoqn5d1.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/98492058079.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378151/normal_601457bf89339.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girodoge.epizy.com/antecedentes_historicos_de_la_geometria_analitica_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/physiology_coloring_book_free.pdfIn PDF document text
    • http://purumurik.epizy.com/computer_accessories_website_template.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/fantastic_beasts_and_where_to_find_them_the_original_screenplay_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/27855422533.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/tugepiruliw.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/73234489295.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C11 5332 bytes
SHA-256: 47aa41bafcb6f9dcf158d5ecf014232c30ba2618d6b68a112d178006b410280f
font_01_sfnt_off00018e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E1E 10240 bytes
SHA-256: 41e90c2afaa6d930b292819e202f5d74ed4771b77269c389f003aa776745468e