Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8ab8fea43cfaa2…

MALICIOUS

PDF

96.5 KB Created: 2021-09-08 19:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: b5e9db8bf324e0d3ea7189c0e02ace63 SHA-1: 8a02671c342d21f5176d116b0e4456a1dfebd328 SHA-256: 5d8ab8fea43cfaa2ccc8f061959829a3f008010d16907345fc2fff33e64bdb09
172 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/62637920816.pdf In PDF document text
    • https://ozsersogutma.com/upload/files/21377913671.pdfIn PDF document text
    • https://nurdagihaber.com/resimler/files/tusuxaxaxud.pdfIn PDF document text
    • https://soswzgierz.pl/web/uploads/files/59741878731.pdfIn PDF document text
    • https://zenit-npk.ru/files/file/26430669398.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/c923ebae225c3d0effe39f2b65b412d0/xarikizalula.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/19741634666.pdfIn PDF document text
    • http://neodentpetrosino.it/userfiles/files/tagedejofegojegemafifoti.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161318a7f49ad7---36231067301.pdfIn PDF document text
    • http://stnicholasway.com/userfiles/file/murekamuvoj.pdfIn PDF document text
    • http://sjmhospital.org/files/js/ckfinder/userfiles/files/dezajukagomalewakisil.pdfIn PDF document text
    • https://confetti-seasons.ru/upload/files/32946563610.pdfIn PDF document text
    • http://ventmetal.ru/userfiles/files/nepon.pdfIn PDF document text
    • https://www.kindspring.org/inc/ckfinder/userfiles/files/23660320490.pdfIn PDF document text
    • http://sergeybazarov.ru/file/juxepetimojatupad.pdfIn PDF document text
    • http://denis-lefebvre-services.com/fichiers/file/fizefi.pdfIn PDF document text
    • http://xn----7sbicwad4afgcgd5aph7d5e.xn--p1ai/ckfinder/userfiles/files/5384430024.pdfIn PDF document text
    • http://elite-nails.pl/Upload/file/zavazoko.pdfIn PDF document text
    • https://infrapanel-alegjobbfutes.hu/userfiles/file/1771451191.pdfIn PDF document text
    • http://esistore.com/userfiles/file/mujuf.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/4fuvmfp2svc536182lgamntgi4/roxitowumesudubigato.pdfIn PDF document text
    • http://nail-free.com/ckfinder/userfiles/files/mibanubezawedofagalu.pdfIn PDF document text
    • https://serihosting.com/calisma2/files/uploads/kewoduzil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=tan+tien+chi+kung+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_off0001133a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1133A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B51 10620 bytes
SHA-256: 98d56227b9e945b95587286c12588bcf480df375a9f57cc4260f55df68140c49
font_02_sfnt_off00014352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14352 18448 bytes
SHA-256: c034e505594048447dd75185771069a21f5f8f3ca27e0ad4b9775311dd7345e7