Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8735381d51c9644…

MALICIOUS

PDF

81.0 KB Created: 2021-10-06 07:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 2472def71f02781464a10be7a87cac3d SHA-1: 305f1075c1a6f44c48dd909430e7132c14fb6a8b SHA-256: f8735381d51c9644144e1b7357e413028e676a5c3fc2f0c84408d6281a583a3f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 https://huntic.ru/uplcv?utm_term=pitch+perfect+2+online+full+movie PDF link annotation
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/459135c65b4c45e0c96307a5c1806228/zutirudeg.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/legubapekav.pdfIn PDF document text
    • https://hijaustabilo.com/contents/files/3876647614.pdfIn PDF document text
    • http://www.santamyoga.be/images/file/wobunovibor.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/3048124bfd6411977bfbe25c5e11b1ee/61230516981.pdfIn PDF document text
    • https://thietbixanh.net/uploads/files/80114506002.pdfIn PDF document text
    • http://cnsgawefgl.netsociality.com/upload/files/razajumulaseli.pdfIn PDF document text
    • http://opersan.com/file/mawinikavapuxu.pdfIn PDF document text
    • https://sergeca.com.ve/ckfinder/userfiles/files/dopat.pdfIn PDF document text
    • http://wdnederland.nl/file/gewevutefaperobipejinotof.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/68597228082.pdfIn PDF document text
    • http://locke-3c.tw/uploads/files/202109290245371138.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133dd955d07b---sopena.pdfIn PDF document text
    • http://komodovo.ru/upload_picture/rugetorebizuvoxog.pdfIn PDF document text
    • http://congress.bpv.su/content/files/files/31486035667.pdfIn PDF document text
    • http://www.gitialiganjlko.org/ckfinder/userfiles/files/butamowo.pdfIn PDF document text
    • http://wonikquartz.com/upload/editor/file/1630475765.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/49036409341.pdfIn PDF document text
    • http://nofatrans-int.com/userfiles/file/27988600377.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/sokivosazo.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/93815363851.pdfIn PDF document text
    • https://globaldreamindia.com/webcms/file/nadoxelowusagukof.pdfIn PDF document text
    • http://blueview.nl/app/webroot/files/userfiles/files/57891233275.pdfIn PDF document text
    • http://inistor.com/ufiles/files/befabifagixerijuleziseze.pdfIn PDF document text
    • http://usefchina.com/uploadfile/file///2021092605062330.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_off0000d7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F4 18064 bytes
SHA-256: a6c93f2f560f27f1b30f22b34da0f34e061a87bc29199c023e00473c6b25e134
font_01_sfnt_off00010606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10606 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1D 10704 bytes
SHA-256: 4f204740fbf0ab2aa94e3e7e4928bb4e8986c26b6f2c0e2931d8deca8a8eef5a