Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3a0993a76bbf07…

MALICIOUS

PDF

65.2 KB Created: 2020-11-25 04:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 746e2464ad3419032fe8ac6327ef34d8 SHA-1: 377638613faeac589ded45c40013e1641d61d41d SHA-256: 4e3a0993a76bbf077f9b45c1f83f9636e4aded51cdfa910b44db23a82fab2ce0
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://traffking.ru/strik?utm_term=welding+merit+badge+book In PDF document text
    • https://juleladenoduko.weebly.com/uploads/1/3/4/4/134478401/6265199.pdfIn PDF document text
    • https://milorupubi.weebly.com/uploads/1/3/4/3/134317418/af04aaef73a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5f982982bc6b5.pdfIn PDF document text
    • https://mitesevutij.weebly.com/uploads/1/3/4/7/134717039/cb578e08bb14.pdfIn PDF document text
    • https://lanoxujuzon.weebly.com/uploads/1/3/4/6/134630121/bafip-zuzevivemup-xazep-pofipokujewu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384155/normal_5f97cf46727a7.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/8f2a9ce7-541f-4842-80e2-26e427f0deaf/where_can_i_download_3ds_roms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b2ff935-7f70-4dce-99e3-3aae4be29c30/pathfinder_form_fillable_character_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/211d9fc3-f1a3-449f-a2ac-9277356a242b/bubip.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/92203289314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd86a7a-dcf9-4847-a03f-93e8d9b831a1/marekaz.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/protons_neutrons_electrons_periodic_table_worksheet.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_off0000c4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BC 5184 bytes
SHA-256: 57b70ee54f633dfacb00a2d0516a828634b5fa7118447aa19803fc8e81d5ed88
font_01_sfnt_off0000d656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD656 9992 bytes
SHA-256: e4c3402e21ff2a8298b64c94ea1c67b7b9ab8f184e53c1695e56c4ea5237f797

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