Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb3a8a33d925cfe…

MALICIOUS

PDF

100.2 KB Created: 2021-06-28 07:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 57950f8c4fa2787a3ec8f5a274736296 SHA-1: 326f1c9ec2f786c668ea287ca9e78725b1511eae SHA-256: 2eb3a8a33d925cfe0336aab0fb01af744d3e9c16c4fab3e86e8582b5206427da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm pointing to multiple websites, many of which appear to be hosted on compromised CMS platforms. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a deliberate attempt to redirect users to potentially malicious content. The ML classifier and ClamAV detection further support its malicious nature, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://dighakanchaninternational.com/FCKeditor/file/52418394398.pdf In PDF document text
    • https://inncredel.com/uploads/42426842529.pdfIn PDF document text
    • https://angelsforwarriors.org/userfiles/files/67672649249.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/71fceb345764691f64e9246b58c6c7ff/valugotiladi.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606f039d172be---75050471175.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704c5667632.pdfIn PDF document text
    • http://webinaris.biz/ckfinder/userfiles/publics/files/51553971807.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/7467411529.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/68c7c90b757b949ddf470639988a6144/xanalanaw.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/70441042314.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/51be7a4d2643482929298248530911f4/vuzimafimaxug.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9926d8a75---jojep.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/7d16464e1cc3be8210fe1f5bf1d67460/27939604119.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/fc04352d10fc0a3a6ba44a8a6736b898/43779522935.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/l32fns87p4nukjf7e3am1qsotr/xunofiwugimagurokolufa.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/24532057346.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ee970f8d4---25286118440.pdfIn PDF document text
    • http://fxmeat.com/upload/file/8fbc3ec5ca04ed58cf97a7903eb591be.pdfIn PDF document text
    • http://bakkervoorwinde.nl/app/webroot/files/ckeditor_files/files/4391991856.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160c97cb93f468---23680954647.pdfIn PDF document text
    • https://asharfilalkulfi.com/ckfinder/userfiles/files/19626419229.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16077d23a9fc9e---sisavefenovetalasugemonav.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6be751c7ca---88696659812.pdfIn PDF document text
    • http://joyearland.com/ckfinder/userfiles/files/16467683810.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/h5l7cm9cdiaa1htq8fo30elkf6/ronotazesutanokexewaxixo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=fall+in+love+at+first+kiss+onlinePDF 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_off0001252a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1252A 18116 bytes
SHA-256: 2449f1bc4947a36725d5f046b90b9e3409e8a955a502754b73ac60912f1a883b
font_01_sfnt_off000153a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BC0 10340 bytes
SHA-256: 02d80a14c67fe10e4241cbfa2c9008c3202342a29e6441db50f82d4ea3e64ca5

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