Malicious PDF — malware analysis report

Static analysis result for SHA-256 4253b2a17bb2e8be…

MALICIOUS

PDF

90.8 KB Created: 2022-03-26 07:09:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 5e2127283c2a5df811a4b118c4986b7b SHA-1: a54b4e4f0e2c38cde7275f74c8343899b91e3dfe SHA-256: 4253b2a17bb2e8be1a3e8288a99c90e0c3d3b1d410b36e89e8deb8edb1cc43f9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://sunuf.co.za/YmrXLWy8?keyword=guia%20de%20ejercicios%20de%20ecuaciones%20trigonometricas%20pdf PDF link annotation
    • https://kuwupixunipava.weebly.com/uploads/1/3/3/9/133986845/077f7d.pdfIn PDF document text
    • https://rakuwogu.weebly.com/uploads/1/3/4/8/134858672/jasipewawosabagukil.pdfIn PDF document text
    • https://nuwudune.weebly.com/uploads/1/3/4/3/134362296/sepirawi.pdfIn PDF document text
    • https://gubaxefu.weebly.com/uploads/1/3/4/5/134592394/fagos_fakuwopapowap.pdfIn PDF document text
    • https://ragaxunuwad.weebly.com/uploads/1/3/1/4/131407405/3997182.pdfIn PDF document text
    • https://lafowesatumu.weebly.com/uploads/1/3/4/5/134503032/jizudemufiwati_nekowegozafow_betuvagek_vivubusisubuwas.pdfIn PDF document text
    • https://xepekozodixati.weebly.com/uploads/1/3/5/3/135346226/jezitadifesijap-xowabo.pdfIn PDF document text
    • https://bunuterujizid.weebly.com/uploads/1/3/4/8/134882333/1095589.pdfIn PDF document text
    • https://zororoxuz.weebly.com/uploads/1/3/4/3/134309160/999a3215a67.pdfIn PDF document text
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/3419b4d95.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/vavov-revinagokoravuz.pdfIn PDF document text
    • https://nesavelo.weebly.com/uploads/1/3/2/3/132303009/9883106.pdfIn PDF document text
    • https://vepoxiwoja.weebly.com/uploads/1/3/1/1/131164136/gusabas-bafaredaj-xekekugedu.pdfIn PDF document text
    • https://nobuwutuzuta.weebly.com/uploads/1/3/4/8/134884415/ccc7cd1a99.pdfIn PDF document text
    • https://kisimerib.weebly.com/uploads/1/3/4/6/134697331/gesorir_bezutibik.pdfIn PDF document text
    • https://bivapere.weebly.com/uploads/1/3/4/6/134689139/xegiloneke_bivopewukelezik.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 11184 bytes
SHA-256: 95d678134ee0581dbabf4d198fc1680a65fd30d5cafd7ae1fa455f8ebb0330b7
font_01_sfnt_off0000fe39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 19680 bytes
SHA-256: b1bcd4e46a71c4d9c672a8a90133ebb5dfad341482c04943d169980725db72e8
font_02_sfnt_off0001313a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_03_sfnt_off000147d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147D8 16128 bytes
SHA-256: 3c78989101cb06b0ca1b4c535d8d88f000bf2c2f20420eb2c28298c0ca4e826f

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