Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5d2e0d5de8c203…

MALICIOUS

PDF

91.1 KB Created: 2021-07-01 14:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 602b69fd5e7949439b4f3306d44c7f41 SHA-1: 8ef24cf101ab8b317969b4bc0331f9358809935d SHA-256: df5d2e0d5de8c203e1e04dae80391be2c4dbc4f8ebe463bac2d273a77b14fa89
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host or distribute malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://chinajessie.com/seadata/data/uploads/img/file/162375556678.pdf In PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/6194fefcddfe17113707e56b07ff6aee/kegigupudufisapozixaxab.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/086cbe864c33d5b9c12ec7a9f8c31c1c/sudexinorowekupazewasigef.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ad6a0231a---kazugijukuxirujibu.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4b4be0fb8e5552493810ecf061da7602/gefabotadoxarapulonawulif.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20134464846.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/80143721203.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3ebda8897---zonenuvumelig.pdfIn PDF document text
    • http://kientrucphatloc.com/upload/files/lufalugigusopulunil.pdfIn PDF document text
    • https://cihangirhotel.com/upload/ckfinder/files/28371731547.pdfIn PDF document text
    • http://magnachip.cn/userfiles/file/20210519153329.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/9pr4n222bq7qr2g8mbrrf94i60/16534489712.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/6835127385.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/331f5fc084f4c3029a6b552656c8d6d6/xisavekukuwozolon.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5e8da372b---82973249179.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/ipgsc34r7scgem2v66i2pn0sqq/vikumokexuxogelapipedil.pdfIn PDF document text
    • https://behagi.eus/files/galeria/files/pefoxekofimixexerufo.pdfIn PDF document text
    • https://cakenepal.com/userfiles/file/43566051948.pdfIn PDF document text
    • http://impex-italia.it/userfiles/files/wopumaramuvuzezibefejit.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/0b25fd2c970904ac1ad811096faa97fb/juwurubozofatavaw.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/4e7431226a91d4f4638de96508a235cb/lirusanuroboxizogujo.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/zepurekami.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=sold+price+searchPDF 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_off00010142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10142 17600 bytes
SHA-256: 7bf8f0dcfe6d21902150e2b4b9ec48e97f6fab176ffc44bca3f99cc775725c8c
font_01_sfnt_off00012fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA8 10484 bytes
SHA-256: 26ceab119a159aa26165fcfd870538c8e610ab23adb59a90df7d10efff9da3f3
font_02_sfnt_off00014782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14782 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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