Malicious PDF — malware analysis report

Static analysis result for SHA-256 191c3af0d4b7ebbe…

MALICIOUS

PDF

69.2 KB Created: 2021-09-29 03:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 7a6f344c14f71e920258ed70c7d7f285 SHA-1: 8c11bd782c0200405ebbe54dc873d766310d070e SHA-256: 191c3af0d4b7ebbe5906533aad18f65a604812ad775165468fcd5c3d7e52442f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://crewmak.ru/uplcv?utm_term=font+calligraphy+copy+paste PDF link annotation
    • https://capitalsyndic.com/userfiles/file/zikesa.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///18376940624.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/jisatupi.pdfIn PDF document text
    • https://chambredhotes-savoie.com/ckfinder/userfiles/files/gumixububulazuki.pdfIn PDF document text
    • https://xn--80apefbdm9ah5g.xn--p1ai/userfiles/jobokatujevelu.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/ferilalubexedolef.pdfIn PDF document text
    • https://buddhaart.in/userfiles/file/91157487022.pdfIn PDF document text
    • http://nguoiquangphianam.com/uploads/files/68306801502.pdfIn PDF document text
    • https://makenie.com/upload/files/wufasut.pdfIn PDF document text
    • https://adamant54.ru/userfiles/files/83313027018.pdfIn PDF document text
    • http://vertracapital.com/uploads/files/98061666473.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/82823628518.pdfIn PDF document text
    • http://f-okinawa.com/img/tmp/file/20179754766.pdfIn PDF document text
    • http://chieusangducphat.com/uploads/userfiles/file/34017280551.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210923014525.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/9pkqe1sj4cltgeq4ie0mrtfk0q/gosinobonizerebabireg.pdfIn PDF document text
    • http://spain-ex.com/images/blog/file/25825174519.pdfIn PDF document text
    • https://ibexquimica.com.br/ckfinder/userfiles/files/ponuwugisev.pdfIn PDF document text
    • https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/79950871712.pdfIn PDF document text
    • https://nepalmicrofinancesummit.org/userfiles/files/maduxelowaviludekoze.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143a9ac2f670---78400228708.pdfIn PDF document text
    • http://psychologadamczak.pl/userfiles/file/susimerovatomidi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB070 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC887 10744 bytes
SHA-256: 1c8adda1f429a48547b2c15dac64ba2f2527ffe625db4fd492793fde17a2d5ce
font_02_sfnt_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 15020 bytes
SHA-256: 69a167e21dc0113b1f89f0904f470b99ad1bab145f69697bef8b6af86f5b5995

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