Malicious PDF — malware analysis report

Static analysis result for SHA-256 5524da4e40337aa1…

MALICIOUS

PDF

74.6 KB Created: 2022-04-09 15:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 8dead3e62be77fed43414be9e4498676 SHA-1: eb7f116c73d87e278b3ff6c58d75768bbdf9185d SHA-256: 5524da4e40337aa186d723b1e2bba6d11932ff39a4567f63c890416c209e9d5a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 http://sbkf.org/files/files/ruwum.pdf In PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/norek.pdfIn PDF document text
    • https://nafoxowozuvika.weebly.com/uploads/1/3/1/3/131383754/kaxosixemife-poxenukube-ruwajusesexoxek-kifuxawizi.pdfIn PDF document text
    • http://futureinfashion.com/ckfinder/userfiles/files/44220386630.pdfIn PDF document text
    • https://liloxowilobo.weebly.com/uploads/1/3/4/2/134265539/7022474.pdfIn PDF document text
    • https://padservhosting.com/userfiles/file/jaguzakobev.pdfIn PDF document text
    • https://sogitinavebifi.weebly.com/uploads/1/3/5/4/135400198/vigaluzexazupez_jevup.pdfIn PDF document text
    • http://kingsbrite.com/kingsbrite.com/userfiles/file/tozetebusogixafosoz.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/kagadur.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/zofumalibepigu.pdfIn PDF document text
    • https://xegugunozom.weebly.com/uploads/1/3/1/4/131482992/kawutazafibulikadow.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/xavekidutovokozesud.pdfIn PDF document text
    • https://bojemoravegoda.weebly.com/uploads/1/3/6/0/136095552/xusulukizavi.pdfIn PDF document text
    • https://kenibojowosude.weebly.com/uploads/1/3/5/3/135324683/2056692.pdfIn PDF document text
    • http://etyekilovarda.hu/userfiles/file/21836771378.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/tovazugokutonawutow.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620abff3c513e---mokirugizesu.pdfIn PDF document text
    • http://bccp-cam.com/kcfinder/upload/files/vunopefosupunapizaxu.pdfIn PDF document text
    • https://fecuq.co.za/YmrXLWy8?keyword=rosencrantz%20and%20guildenstern%20are%20dead%20act%201%20quizPDF 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 extracted file (font_00_sfnt_off0000be55.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000be55.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE55 16928 bytes
SHA-256: ecf4ae99910f7dfd0a1ae88b78bf8bc0613cd393f8047ba381656f30439d1c87
font_01_sfnt_off0000ea5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5E 10948 bytes
SHA-256: 2686a896b44c929cfbd2d3867a85cac8100551efd0a8b2a3facfe0e6cc353f8d
font_02_sfnt_off0001037a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1