Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd74e85a0f2bc33f…

MALICIOUS

PDF

104.1 KB Created: 2021-10-14 02:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 921be5caeb36b41e08104fa950e67e87 SHA-1: 0cc276d1318d086b3506f34de7503b6c884522e8 SHA-256: cd74e85a0f2bc33f8a14d0be2c86af93129619d921eeef2bd2e60ff9bb5e9536
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • 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.
  • 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://feg.vn/uploads/files/pelipitema.pdf In PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613749489b68c---68463136466.pdfIn PDF document text
    • http://addisonplaza.abwingsmd.com/uploads/files/jobamareki.pdfIn PDF document text
    • https://www.ocnistudio.cz/ckfinder/userfiles/files/28084846578.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/30361072124.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/371a6766ebdde9b37ed26a57ecdb2d81/rasazubesibeg.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16140f00dd1a23---30668246182.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/67602640875.pdfIn PDF document text
    • http://kleinschadenexpert.de/userfiles/file/37516546571.pdfIn PDF document text
    • http://canissapiens.com/images/uploads/file/tadubapodotudilunavidojek.pdfIn PDF document text
    • https://art-eria.pl/mandarynka/pliki/files/56396970505.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139ed412fe6d---motiwudejomuxopobewetele.pdfIn PDF document text
    • http://denkobarbell.com/_upload/files/76392341085.pdfIn PDF document text
    • http://cabanagarden.hu/editor_up/47881469679.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/sawofuga.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1614971b300fd8---gifukopoveselosito.pdfIn PDF document text
    • https://jewfri.kr/files/image/files/kuwunarovosat.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/47028714107.pdfIn PDF document text
    • http://oldmotorsclub.com/files/file/25042653011.pdfIn PDF document text
    • http://phucuongplus.com/upload/files/96542853697.pdfIn PDF document text
    • http://righetti-ticozzi.it/userfiles/files/98870256429.pdfIn PDF document text
    • http://abwrva.com/uploads/files/76512844565.pdfIn PDF document text
    • http://ville-dammarie.com/ckfinder/userfiles/files/faloniwetesa.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/6Zflnl449io/uplcv?utm_term=funny+words+of+wisdom+memesPDF 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_off00012b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B85 21476 bytes
SHA-256: dbfb26ba7447bfd798bf39e4a42b970c0948f90713a6cc78a0c02047a7a7ac1b
font_01_sfnt_off0001632b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1632B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B42 10484 bytes
SHA-256: b255b2a5b682007638c7e9421d1b2f34e0ca90a33cabc61c4fe3bbf48dd54f9f