Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c653daa441d18…

MALICIOUS

PDF

72.9 KB Created: 2020-11-19 14:26:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: fe61022467f276d0ace65967c512b8ce SHA-1: 5c95115690927eeb2439b1c5fcd439243b13f2bd SHA-256: 4e3c653daa441d1839a82370c9c93d93120a717ae5518f44977e13d36f19ccd5
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/strik?utm_term=sarco+surplus+gun+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_5f9b75aa54329.pdfIn PDF document text
    • https://wisefumi.weebly.com/uploads/1/3/4/6/134672277/9150897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420470/normal_5fa4bd945ca42.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/tavutabarutuvo-getilate-kebotixiwa-garebis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5fae1d9f987eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f9119eba05d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418796/normal_5f96382037a99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f963b3c7bd6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_5f9fc6d500cae.pdfIn PDF document text
    • https://judiwufafa.weebly.com/uploads/1/3/3/9/133999980/vulixidezokadisubi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501208/normal_5fb4a3d4f341b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dabatisew/buffy_the_vampire_slayer_season_3_episode_4.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/57648179060.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_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 5204 bytes
SHA-256: 8557598eb0f4882047cb40b0a68337d70e19cbf9f481efa2b28dc2efe7e78ca9
font_01_sfnt_off0000ee92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE92 12084 bytes
SHA-256: 368f63f91faaaf9c596815e0f3a75c43a54a67d3cea25275caaaa7d2ec18a7ae