Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d5c8d9a5c6d919…

MALICIOUS

PDF

147.1 KB Created: 2021-12-04 18:35:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 036a7a93ec0aeae8e4c5435798d77da9 SHA-1: c67e8aabd4920ccc2cc458ff43def27959be489b SHA-256: c5d5c8d9a5c6d91918ef9e1c0ea1c1ea89821eafd11ec53c756a04b7e90d8ea1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9543

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://vitanov.rs/files/29068731557.pdf In PDF document text
    • http://dush-kz.ru/uploads/fck/file/87320464145.pdfIn PDF document text
    • https://linardi.ru/files/file/24357072958.pdfIn PDF document text
    • https://erdemlerkoleji.com/resimler/files/kopubimufonelunajiwilosi.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612f46755a641---vavur.pdfIn PDF document text
    • https://resepangka.org/contents/files/88567177625.pdfIn PDF document text
    • https://www.hsbofmn.com/ckfinder/userfiles/files/17183547164.pdfIn PDF document text
    • http://brukbet.com/user_images/file/sodetapexifas.pdfIn PDF document text
    • https://nwdglobal.com/ckfinder/userfiles/files/43015821917.pdfIn PDF document text
    • http://3m18.com/images/editor/files/54264989551.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/d165de7bcd011b86734975a49101777e/mirilazaruwifut.pdfIn PDF document text
    • http://controlsystemco.com/cache/fck_files/file/kukifijo.pdfIn PDF document text
    • https://lakepulaski.com/cms_uploads/file/61890381140.pdfIn PDF document text
    • https://wisestudentz.com/userfiles/file/24474922882.pdfIn PDF document text
    • http://funkyspa.net/ckfinder/userfiles/files/morisavegobemofijuruxakun.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/gipilonitukofefimexowa.pdfIn PDF document text
    • http://flairpens.ru/uploads/files/94894368988.pdfIn PDF document text
    • https://arerp.kr/data/file///57055646536.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/file/49676517542.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/rekixob.pdfIn PDF document text
    • http://cgpreceptor.com/ckfinder/userfiles/files/jesisejovenak.pdfIn PDF document text
    • https://namhunglogistic.vn/site/files/defozunofisuzazujuretu.pdfIn PDF document text
    • http://juha.be/_files/file/11625578434.pdfIn PDF document text
    • https://gyepracs.budvill.hu/userfiles/files/xegiwidetaxevuwajemu.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=5th+grade+math+division+worksheets+pdfPDF 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_off0001df5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF5C 11180 bytes
SHA-256: 5adc6ef33a0737c77f470ae7aa32d8ef5e800068103135faa6a7dd2841decd75
font_01_sfnt_off0001f937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F937 17376 bytes
SHA-256: 154f82fb466dc67b9196902d3a233aebec14f0de863a595bff84a51ede28516b
font_02_sfnt_off000226c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x226C3 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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