Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8bcb83c3bbf7be…

MALICIOUS

PDF

76.1 KB Created: 2020-12-26 02:20:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: c6bb3fac4d37c3b888765cc97a94a0a2 SHA-1: d77b01a05e13bd8402f67a155710da6964699a8e SHA-256: 5d8bcb83c3bbf7be3fbc4fc2db5e34f3b03e86016c631651ccbe5b5cd4ee2fa8
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://traffine.ru/wb?keyword=stick%20fight%20the%20game%20apk%20mod In PDF document text
    • https://vekoliro.weebly.com/uploads/1/3/4/4/134482952/navoreril_titadomu_takamad.pdfIn PDF document text
    • https://cdn.sqhk.co/rogotojuseb/ijchchf/american_drones_for_sale.pdfIn PDF document text
    • https://faturigazed.weebly.com/uploads/1/3/4/8/134859690/8075822.pdfIn PDF document text
    • https://disavapiviloma.weebly.com/uploads/1/3/4/3/134351159/45ab32b3f33f6f.pdfIn PDF document text
    • https://cdn.sqhk.co/xopewina/TFK4eWI/11089582678.pdfIn PDF document text
    • https://cdn.sqhk.co/fakupavod/ihHLii4/54472642353.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/miggg7V/14319053981.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff5e3b2-1a88-41dc-ae27-6dc18390350d/82607475863.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/45413649894.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/xapatewemit.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/list_of_bharat_ratna_awards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b04a6c11-c494-4a96-bab6-9d628405a8e2/alex_cooper_story_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/rifevi.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_off0000eeb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB4 5428 bytes
SHA-256: cb65f2879c327d9ddbaf5ef6872612fedc27d61227377e43dcecfb258cb09c7e
font_01_sfnt_off00010112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10112 10240 bytes
SHA-256: cd5e241be2c29233d7c7def9e975babbc7a8c442850b517804411e346e563e8f

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