Malicious PDF — malware analysis report

Static analysis result for SHA-256 4affcdffd2fb57c7…

MALICIOUS

PDF

78.5 KB Created: 2021-09-04 00:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 4d01b3ce977112ecd63ee0decbe20cb0 SHA-1: fff559b302d7b931f195fc7a410930b70b7cc66d SHA-256: 4affcdffd2fb57c7da396cd860734d4d16e21588437ca5b2c2539171d107b891
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://tipresentoio.it/images/file/23025659408.pdf In PDF document text
    • http://tevukasveza.lt/ckfinder/userfiles/files/gefulefekevinesepiz.pdfIn PDF document text
    • http://ecompletecontact.com/ckfinder/userfiles/files/tuzun.pdfIn PDF document text
    • https://xn--fiqa735be48e.com/upload/files/tiguwagulepijugoke.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/55dab4e668c60a98444e376cb88bbc52/fuxolutogu.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4bd00f8e4---9089562544.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/29627339463.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/27d4b414110d1dd19bdef7387ecf8198/95329540495.pdfIn PDF document text
    • http://xn--tnqz8hz5cb8l.com/upload/files/mitubajozeperav.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/8ev1kpvif2bp0otomvhtlsqun0/bijabivabakudasuwegal.pdfIn PDF document text
    • http://ippon.lv/uploads/File/kosikezijonu.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160acb30e77e79---verepoxanagugak.pdfIn PDF document text
    • https://godahoian.com/app/webroot/upload/files/43062859832.pdfIn PDF document text
    • http://kingcraftviet.com/uploads/ckfinder/files/naridal.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/40460969272.pdfIn PDF document text
    • http://thefarmatarapahoecounty.com/userimages/gekunej.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/482f515b7d82c72ab82727f015f92f1b/4596490038.pdfIn PDF document text
    • http://ginzaoakland.com/uploads/files/paxuko.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/96avg92au8vogenebvujvd88nc/69890315805.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd02463caa---83979104705.pdfIn PDF document text
    • http://vonschickenconcord.com/uploads/files/jasupuf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=torque+problems+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_off0000d19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19A 16852 bytes
SHA-256: 53ee9713520abb1a8f96c37dd8a19821fc3430797020c93928f4e9bd7071f173
font_01_sfnt_off0000fd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5F 10552 bytes
SHA-256: cf74666938ceb4eb97aefc664f14ab48f75183ac8184ca0ccfb9c12e89318ac7
font_02_sfnt_off000114fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114FE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1