Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd79256021ef0269…

MALICIOUS

PDF

114.4 KB Created: 2021-07-21 09:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 7141eb2dbd9a5000690ec584a4bce0cb SHA-1: c3672c783db503127ef4bb60b7f3247f1910efdc SHA-256: cd79256021ef02694f1f039827a387c044a0560523594328f5370b160f743757
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://kirsanov-maslo.ru/uploads/55179430295.pdf In PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/48427279e9760268a3daad21ef202388/zadolupitavexukufebujozo.pdfIn PDF document text
    • http://soldearenales.com/galeria/files/rusunosevitek.pdfIn PDF document text
    • https://zahnersatz.pl/userfiles/files/bemobotowipukisozafa.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/6f1si6baheuci7t92agcg6pp46/dadobozivoto.pdfIn PDF document text
    • http://hyperasp.net/userfiles/file/28752291581.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/970djn6d6ksgbcglk6fmer6v56/wipodelexevafoxiwil.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/a811258e5e4737483a796d710e08d62c/26948431436.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a499bc1c2a5---sirebimikodezevufogujok.pdfIn PDF document text
    • http://trungnguyenjsc.vn/uploads/image/files/sixufifiditagogegovik.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bad82b67caf---98467765224.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/wugesezipakix.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/ajnjt19i6nl6eg8u7acj6mmn13/siwikifugukof.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/boxuzonovidovifado.pdfIn PDF document text
    • https://coopinproject.eu/ckfinder/userfiles/files/58145946713.pdfIn PDF document text
    • https://elmaga.lt/components/com_mijoshop/opencart/image/data/files/25470448280.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acaac0454be---82047208145.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/kutunikirato.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/femikuwuperugafukaketu.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/mamuzud.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/260a70a57af54a2e76c5e648d5984d86/xuzitixo.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c970eb9e30e---sexijadetonosere.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/xanusiratabevumotabu.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9087a80ba0---15202471518.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=catching+fire+full+moviePDF 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_off000156c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156C1 10812 bytes
SHA-256: 9867052c7428bfbdd48b972bb05433b58c0dd68711aef8bd3ce98dc9660d6860
font_01_sfnt_off00016f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F8C 20928 bytes
SHA-256: a24630cd2a88ba4f03d497239d0d51ef5081097a37f202184036cb2684d1238f
font_02_sfnt_off0001a480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A480 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1