Malicious PDF — malware analysis report

Static analysis result for SHA-256 4255545930ba5d94…

MALICIOUS

PDF

64.6 KB Created: 2020-11-19 22:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 4f9a176d482dd19a47a4484e4fd5cb68 SHA-1: f6efab345e96f465e84efc14ee78bb9042e9ce12 SHA-256: 4255545930ba5d94d3c7b48b39b85d1fedd5a702c288d5b08df6c94abf60d810
186 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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffnew.ru/wb?keyword=decimal%20fraction%20percentage%20worksheet PDF link annotation
    • https://jumamugiwaxoxuj.weebly.com/uploads/1/3/4/7/134718864/femiz.pdfIn PDF document text
    • https://vozekokojexofu.weebly.com/uploads/1/3/4/6/134645554/98a6441.pdfIn PDF document text
    • https://tixosagekade.weebly.com/uploads/1/3/4/4/134489061/dufumubulix-wapobijavidu-loxoma.pdfIn PDF document text
    • https://kawifapexevudo.weebly.com/uploads/1/3/4/7/134711131/2d5e8a86979d.pdfIn PDF document text
    • https://viziwebaf.weebly.com/uploads/1/3/3/9/133999863/vuvekifofigenefuse.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/zosipufugotovu-kopeva.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/acba796e1.pdfIn PDF document text
    • https://posukezeke.weebly.com/uploads/1/3/4/7/134746748/nawevufozif_ruses_zefubekinixesut_zofavezawena.pdfIn PDF document text
    • https://kibinino.weebly.com/uploads/1/3/4/6/134603545/buwusuma-vutuma.pdfIn PDF document text
    • https://rezolokad.weebly.com/uploads/1/3/4/7/134718373/58d7d00ed577c68.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/4f28b602-8c97-4eb3-9f74-534537b26fdd/45779185872.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/full_battle_rattle_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8e84835-ca4d-4d43-a6d9-66dc8f8de425/lenezukirosusuneponof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4247d97-2775-400c-a97a-93b9331e8db5/pidore.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_off0000bfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFEE 5584 bytes
SHA-256: a0776d9aa14bd13aa64592d2a904b47445b74d230d7486b56af542a060ee6110
font_01_sfnt_off0000d2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DC 10252 bytes
SHA-256: e0b74aca6464a4aa32db8154ea7609455aded68aa346fae91bae4312df83e3d4

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