Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d82ff3e0fde9b96…

MALICIOUS

PDF

81.4 KB Created: 2021-09-10 10:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 6609859f2b255f42e865f67a69901e4c SHA-1: 104553ff79f5076490b4c2399ec7fc426f3904bd SHA-256: 5d82ff3e0fde9b96073119251afee4810a12d6b7c786ac78d3f47d160f1de7fe
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://namdolove.com/FileData/ckfinder/files/20210902_DE4BCE7EB9F29CA5.pdf In PDF document text
    • http://xn--80aer5aza.xn---42-5cdakyymnnb9ake1az.xn--p1ai/ckfinder/userfiles/files/93542891905.pdfIn PDF document text
    • https://asoriofrio.org/ckfinder/userfiles/files/vuwiv.pdfIn PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/43864170176.pdfIn PDF document text
    • http://chukgoobok.com/files/fckeditor/file/vitefonepumimoru.pdfIn PDF document text
    • https://profession-your-dr.com/uploads/files/202108311846437076.pdfIn PDF document text
    • https://samajsutra.com/userfiles/files/kebom.pdfIn PDF document text
    • https://ostrichpharmaceuticals.com/userfiles/file/zuxexumidaner.pdfIn PDF document text
    • https://markmont.eu/editor_uploads/system/files/tutekujapun.pdfIn PDF document text
    • http://www.hebrewforreadingcomprehension.com/content/zobelamik.pdfIn PDF document text
    • http://plaschke-partner.com/uploaded/file/58762544210.pdfIn PDF document text
    • http://workontext.ru/media/file/lofewozefekumogak.pdfIn PDF document text
    • http://nasledie-sluck.by/var/upload/file/64398481228.pdfIn PDF document text
    • https://xinpayflow.com/ckfinder/userfiles/files/gelunukidewazuro.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/mozisirejog.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/rovorazuzola.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/db5a4cc4cce46bc0ff2405dc807f69e2/dofepakorobiwuz.pdfIn PDF document text
    • http://saconsultancy.com/userfiles/file/34238607745.pdfIn PDF document text
    • http://triple-a.co.th/ckfinder/userfiles/files/vuxojogugixuwudelalosubow.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/biviwudep.pdfIn PDF document text
    • http://csp.hu/editor_up/61937617770.pdfIn PDF document text
    • https://chataigne-cevennes.fr/imgs/files/lilodu.pdfIn PDF document text
    • https://ystechpro.com/nbloom/fckuploads/file/temavunurasibota.pdfIn PDF document text
    • http://chi-kara.net/Upload/files/jaxulapolibov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=computational+fluid+mechanics+and+heat+transfer+3rd+edition+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_off0000d8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B0 17140 bytes
SHA-256: dedb3a939df703017d8c82570b0dd8e084dff1472b41592b4b4bc1d14f24e3da
font_01_sfnt_off000104e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFE 11188 bytes
SHA-256: ccbd1cdd694120bc2951c852ce71aa1613f37f6f4e9c8058aff41d3d5e5f8dd1

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