Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed27c431d4bc185…

MALICIOUS

PDF

73.4 KB Created: 2021-03-04 05:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5a88d2acf3f9706b658f3b7f1a7c98b5 SHA-1: ae9043b04c5d8a39afacb7a32a2c03c64b8af081 SHA-256: 3ed27c431d4bc1857521dbaff1c6fd20e06d2536b25b95fdf657606c572206de
136 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it's an SEO redirector link used for phishing, disguised as a free download. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL, https://soxebez.ru/123?utm_term=language+teaching+techniques+pdf, is the primary indicator of the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/123?utm_term=language+teaching+techniques+pdf PDF link annotation
    • https://cdn.sqhk.co/rosivapixove/gcribrt/the_seven_deadly_sins_grand_cross_descargar_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/idyhjja/jugar_standoff_multiplayer_en_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/jozihQv/xuwodevedimeroninotogita.pdfIn PDF document text
    • https://cdn.sqhk.co/puxumede/ijxgjSt/38154335287.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393503/normal_5fd711fbc3408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451221/normal_5fcd8d7727451.pdfIn PDF document text
    • https://cdn.sqhk.co/vomofizog/hdUchak/3805591424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_60313310b4bc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505839/normal_5ffe7a73d5c3f.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/2Pmiigf/video_editing_jobs_salary_in_dubai.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/hhaUjjn/befukipizukejofewu.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/iiagjhf/coin_master_cheats.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/33464086121.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zoligagomuwe.onlinewebshop.net/87329459399.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE360 5356 bytes
SHA-256: d08daf40c6c09e3272be55830f3089fd9529554a6cb35b71436cc2f088e367a8
font_01_sfnt_off0000f594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF594 10148 bytes
SHA-256: f2f516ee852ac9a8e690cf8677ca22a1704b471b9a655c6df42e53a772414661