Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd73d8d9540f7b3d…

MALICIOUS

PDF

79.1 KB Created: 2021-10-21 23:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 13a7ff9cfa3c32d063a685b601da4832 SHA-1: 101e3f1f5f4cce736fed6d9df19960a39b1a0d0b SHA-256: cd73d8d9540f7b3d804042e225c3236570206b03f655c657bec5a80f9ff78c43
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://oniceh.ru/uplcv?utm_term=redirect+subdomain+to+domain PDF link annotation
    • https://pacientes.quiroser.com/UserFilesQUI/file/rabek.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/jajewemute.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614df81b61f3a---kezazavepide.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/gonoxewutomugonavodopifab.pdfIn PDF document text
    • http://islenapuntos.com/campannas/file/61967601838.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/14016894602.pdfIn PDF document text
    • http://watdoenwevandaag.nl/upload/22264279758.pdfIn PDF document text
    • https://sacc-la-chaux-de-fonds.ch/fichiers/file/84528971226.pdfIn PDF document text
    • http://staresecurity.com/userfiles/file/vuzabil.pdfIn PDF document text
    • https://fitness-sport.it/userfiles/file/83037285054.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/35099668572.pdfIn PDF document text
    • https://alusol-kw.com/ckfinder/userfiles/files/wetogokisabelab.pdfIn PDF document text
    • http://caphegiabao.com/upload/fck/file/vurijeporubapubiwagodig.pdfIn PDF document text
    • http://rotang.net/userfiles/file/4418579358.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/27532457471.pdfIn PDF document text
    • http://cnsgawefgl.netsociality.com/upload/files/vesonitefanawubipite.pdfIn PDF document text
    • https://gancza-yacht.pl/userfiles/file/fexasujifagibelovukime.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/73012403369.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/14478702666.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/13699603256.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/fumulomiwevifesufevu.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/83ed96d492ea3c22958520747352ba20/34863080376.pdfIn PDF document text
    • https://mots.alaxarxa.cat/cmsimple/images/file/favulobugulizivifelize.pdfIn PDF document text
    • https://zlato-invest.cz/upload/files/70038335286.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_off0000d30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30C 16548 bytes
SHA-256: d78dfb5485b45ec567ac0a36971edfd0d65efd9ef46b9361c5fab3b34426685f
font_01_sfnt_off0000fddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000115f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115F2 10772 bytes
SHA-256: 1924013163fb4643c240e914fe0e5bcf54e01e077ef7edd845e1c5157330e271

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