Malicious PDF — malware analysis report

Static analysis result for SHA-256 4250cf5eca2bed87…

MALICIOUS

PDF

81.8 KB Created: 2021-10-07 16:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: e099aa9a5fb7844f7fe8abe0f9f4ccd0 SHA-1: a7db9fe43b5e7a4edf793cbaa76b918e4396e693 SHA-256: 4250cf5eca2bed870fed93530871ac5c4b0b141d719647c4e1d19aa87322a8e0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • 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 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://aynispirit.nl/userfiles/file/zulusisurumijozoz.pdf In PDF document text
    • https://bloc-immo.com/images/86812600309.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161470fce3a36d---jekotibedabik.pdfIn PDF document text
    • http://tasarimak.com/ckfinder/userfiles/files/fuwadimupesuwuti.pdfIn PDF document text
    • http://kingsap.com/file_media/file_image/file/mududisoluduxegixus.pdfIn PDF document text
    • http://sibinetweek.ru/userfiles/file/85994690446.pdfIn PDF document text
    • https://doctornhospital.com/banglanews24/editorsfiles/files/fexuzujavulufemaduneb.pdfIn PDF document text
    • https://al-wesam.com/userfiles/files/dometawisigunipexi.pdfIn PDF document text
    • https://rrhh.fronteraliving.com/imagenes/contenidos/files/62516167053.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/42235943731.pdfIn PDF document text
    • http://keralabiblesociety.com/fck_uploads/file/79939712045.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/livukodokedufeseduruvexo.pdfIn PDF document text
    • https://vinaarc.com/app/webroot/files/ckfinder/userfiles/files/zamilix.pdfIn PDF document text
    • http://hcbarrett.com/user_area/file/zimudovupakaludirokema.pdfIn PDF document text
    • http://bfcy88.com/uploads/files/22518152034.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20211002205314.pdfIn PDF document text
    • http://berbun.com/user_img/file/mubegobogosivagafuga.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/61463581356.pdfIn PDF document text
    • http://zavalinka.by/var/upload/file/wutajelosevelipoxeti.pdfIn PDF document text
    • http://volkshilfe-vlbg.at/images/content/files/pebelekimibegipifud.pdfIn PDF document text
    • http://zhuoxinlaw.com/userfiles/file/20210906171032_1446183763.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=sweating+out+a+hangoverPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB57 10500 bytes
SHA-256: 6181b97693eb643e95ced3d8fabec040695832dda8291c40b5097b1f3220467c
font_01_sfnt_off0000f347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF347 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B59 18056 bytes
SHA-256: 5454aedf09a0661c5148b460a9d87d14017c6721355c70949e0b0d1879389325

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