Malicious PDF — malware analysis report

Static analysis result for SHA-256 7828b38cd630cbba…

MALICIOUS

PDF

103.6 KB Created: 2021-10-29 19:34:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 2cc61a145a2ac96f524a312d7321f91c SHA-1: 63d2e1b253ed0c7c20982ce1c228483f100800a0 SHA-256: 7828b38cd630cbbacd96f4417c1548b5e18dc54e8417363a9c33d56c77a91f3e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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 http://scro.ru/pic/file/mivibokinijomubebiba.pdf In PDF document text
    • https://almuhja.com/ckfinder/userfiles/files/19631812875.pdfIn PDF document text
    • https://ngonluathan.com/images/ckeditor/files/ropukinujut.pdfIn PDF document text
    • https://conviviodihera.it/dati/upload/file/mevebax.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/6513332320.pdfIn PDF document text
    • http://tipiland.net/upload/file/dogavovigomirerofukukad.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/63732795100.pdfIn PDF document text
    • http://taiwangallant.com/uploads/files/202109011321173562.pdfIn PDF document text
    • https://zhbiotech.com/CKEdit/upload/files/bokolofasutozegoxikujiro.pdfIn PDF document text
    • http://an-professional.ru/img/files/file/1810428127.pdfIn PDF document text
    • http://aci-immobilier-douai.fr/userfiles/files/2259845927.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/zuvat.pdfIn PDF document text
    • http://suurelepa.ee/data/file/2338013177.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616034b6bc8de---85521409163.pdfIn PDF document text
    • https://printsolutions.printsolutions.bg/uploads/wysiwyg/files/83066395141.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/29775831192.pdfIn PDF document text
    • http://ajk-opakowania.eu/upload/fck/file/78566711089.pdfIn PDF document text
    • http://giovanninociti.com/userfiles/files/tavulutujar.pdfIn PDF document text
    • http://pamatudarbai.lt/ckfinder/userfiles/files/tobajapajotoxubefidipumux.pdfIn PDF document text
    • http://nhatrangpalacehotel.com/app/webroot/upload/files/tavaxitinanesevegitazulum.pdfIn PDF document text
    • http://qianshunqs.com/admin/upload/16091003309.pdfIn PDF document text
    • http://redactron.com/userfiles/file/rojezugegok.pdfIn PDF document text
    • https://tcremich.lu/files/files/43320268504.pdfIn PDF document text
    • https://nbcmedia.vn/ckfinder/userfiles/files/gijizurupowipupugonuwem.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/6028473597.pdfIn PDF document text
    • http://www.huescalamagiaenfotos.com/userfiles/files/netimegexa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BGAemAmcdTc/uplcv?utm_term=draw+the+architecture+of+8086PDF 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_off00012981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12981 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14198 10800 bytes
SHA-256: 0d44acfdb470b4c51ffe63440dd65bff3f413bc3d918df72dc3d005db4e84187
font_02_sfnt_off00015ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AB5 20236 bytes
SHA-256: 91ae41ae3a644f46d52b74e0f15879b7607d8f93db0b56e09b3a0a6dca076d31

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