Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd78c6af2621e1c3…

MALICIOUS

PDF

83.5 KB Created: 2021-08-29 13:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 95009c4bb6b701a4e18f00234cc049c3 SHA-1: 2ef8741ab387fcefc54f29722839efeb72a6338d SHA-256: cd78c6af2621e1c3928b8847f9f7352f3b79467ebf39c3cb5c65ff43770a690b
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://nomylo.ru/uplcv?utm_term=horoscope+today+8+march+2021 PDF link annotation
    • http://pc75.net/upfiles/file/1621584973.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/10743115370.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/zetokidodelimalozek.pdfIn PDF document text
    • https://drsoleimani.ir/userfiles/file/sasivemirinutavare.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/83269675001.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/89a5601f4144dff8bb4189210e49155c/33482894441.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/sasad.pdfIn PDF document text
    • http://ipost.mn/ckfinder/userfiles/files/18684032741.pdfIn PDF document text
    • http://tatugigo.com/ckfinder/userfiles/files/wakepupuzagujav.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/15839403743.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/6c8cf5cdce83a3bdb541613c1c3261ce/mefafewudebobejof.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/656eq8tplja85tacjtufj5gook/25893642670.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ff6c8629f55---99562840260.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/43b8adc497c6cda6820c372e7df1febd/tupalexujivoxabetimuze.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/lumirerozajotewa.pdfIn PDF document text
    • https://industriameccanica.it/file/15699832111.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a97048a67ca---62906709619.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607aafa174413---degifamefudanizudixexapi.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/77921931348.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160dea3de90b00---4925976841.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/60abab60b5dba448f0bff57887b414e5/14592102441.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/66879655936.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/bvs37npt5v5mc3qgdqh66l3o67/nevujozazeneret.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e691ed8bd---sitazetafikidilasafibol.pdfIn PDF document text
    • http://muzeumostrowiec.pl/obrazy/file/naridamasuji.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/041ngtg03bd275i40gr2e4rtb2/bakotumezexaxurukuvu.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_off0000e2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A8 11144 bytes
SHA-256: 103d15e4e90d5687b43780f9ec69ad7adee0dfac76cc61b474a5e16c7a97154b
font_01_sfnt_off0000fcd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD3 16476 bytes
SHA-256: 47716fdb374cfb3149a43a2350ae1bc1534229315032b3b8e8541bf93696cb82
font_02_sfnt_off00012746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12746 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1