Malicious PDF — malware analysis report

Static analysis result for SHA-256 af256b6e5c410745…

MALICIOUS

PDF

88.5 KB Created: 2021-10-06 14:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 10cb88c04ce29641b591987d851498a3 SHA-1: 75b81533aa28ac97e2f93339fb9e52fdbd3a97e8 SHA-256: af256b6e5c410745fc89c6cf36c7213c1d281abae4e77a4b474734270e2fc6ec
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://cructi.ru/uplcv?utm_term=best+high+paying+jobs+without+degree PDF link annotation
    • https://nedimgame.net/calisma2/files/uploads/85923438528.pdfIn PDF document text
    • https://immsac.pe/sgi_userfiles/userfiles/files/geperasabixu.pdfIn PDF document text
    • http://jlicentral.com/images/authors/file/rijufovagutaganivaz.pdfIn PDF document text
    • https://smobiil.eu/userfiles/files/93380170105.pdfIn PDF document text
    • http://indigobaby.eu/upload/files/vexolovalafasus.pdfIn PDF document text
    • http://hotelalbicia.com/userfiles/file/94230854048.pdfIn PDF document text
    • http://bannermaul.com/userData/board/file/guviregigazewuxumo.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/pufazopede.pdfIn PDF document text
    • http://kalkulacka-hypo.cz/userfiles/files/45111649743.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/24328465400.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/68265955143.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/lidumeluf.pdfIn PDF document text
    • http://amandamaitland.com/images/file/99832238682.pdfIn PDF document text
    • http://westfallassociates.com/documents/file/wesarisexi.pdfIn PDF document text
    • http://transbur.ru/admin/ckfinder/userfiles/files/mubilenesigelofumivadopuv.pdfIn PDF document text
    • http://ambulatorioveterinariomariani.it/userfiles/files/fivajaxixexivajebar.pdfIn PDF document text
    • https://dintek.eu/uploads/file/bexazifagalebadasubad.pdfIn PDF document text
    • https://aradmissions.com/ci/userfiles/files/36800182487.pdfIn PDF document text
    • http://goodfortune.hk/UpLoadFile/file///38333191068.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/jiwufilu.pdfIn PDF document text
    • http://hosungtour.net/FileData/ckfinder/files/20210905_4584FADBD236718E.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/torowugalorukuvewir.pdfIn PDF document text
    • https://thebookonpersonaltransformation.com/FCKeditor/file/23580134032.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_off0000f1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E8 11248 bytes
SHA-256: ea835163f9e653c515a727deed988dfa34342ea11bc05c44c5c5e0fce729ef9b
font_01_sfnt_off00010bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FC 18504 bytes
SHA-256: dbcea60f9647040f18cb2ff6bbfc3dacd1877258ba5587fda9009c5d913f8215

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