Malicious PDF — malware analysis report

Static analysis result for SHA-256 85612409ecaa0732…

MALICIOUS

PDF

69.3 KB Created: 2021-09-19 14:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 6c95e049748313f287a4b8dfd2ef349c SHA-1: 0cd6fbe2adf109784c48d3f58cfd716965aa97da SHA-256: 85612409ecaa07320890b6ffcd960435e6a8c26f77f16af0525d29f0fe4b8458
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://huntic.ru/uplcv?utm_term=download+minecraft+java+edition+1.15+for+android PDF link annotation
    • http://lonerangerfanclub.com/ckfinder/userfiles/files/pilugegoxujazumufikemifi.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/563b1cda47f988754da9cc3a4f2c6461/nakafon.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/torefizalizonelonitidawa.pdfIn PDF document text
    • http://quranday.org/userfiles/file/39433119506.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/67890460393.pdfIn PDF document text
    • http://ylplj.com/ckfinder/userfiles/files/vedadujokawivupe.pdfIn PDF document text
    • http://directartdeal.com/uploaded_files/userfiles/files/tijebomazatinoku.pdfIn PDF document text
    • http://abakus-routing.co.uk/ckfinder/userfiles/files/89747928088.pdfIn PDF document text
    • http://le-bouquet.be/userfiles/files/zerulage.pdfIn PDF document text
    • https://buka.ru/sadm_files/22328831287.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/37651884435.pdfIn PDF document text
    • http://ageddfjtj.pretty-match.com/upload/files/88403056347.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/79366500624.pdfIn PDF document text
    • http://studiosiriosrl.it/userfiles/files/54303055097.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bacd835b73---begeperisa.pdfIn PDF document text
    • https://ekselantechnology.solutions/ckfinder/userfiles/files/40189345918.pdfIn PDF document text
    • https://bustotoronto.com/userfiles/file/76115087170.pdfIn PDF document text
    • https://barcelonacentremedic.cat/files/galeria/files/91518418590.pdfIn PDF document text
    • http://frutapacargentina.com/ckfinder/userfiles/files/66750803132.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/25752855004.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/59073060309.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_off0000b042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB042 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC859 11004 bytes
SHA-256: e5afa6480994d9a5476baf9f1b6b254efd0bb7e9b355290857ea41eb381e49bb
font_02_sfnt_off0000e1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EC 14740 bytes
SHA-256: c656c50df99aa65e1fb1c2d2b854c3c33f08ae12aee7af0c5b1c44edc3c8c1d2

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