Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4fc6adfe841e0e…

MALICIOUS

PDF

63.9 KB Created: 2021-05-23 12:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b90f66749bf44a9364e4d79664375bf4 SHA-1: c9a12a917887a4cf69c4a3521a8e635dc50f7dd9 SHA-256: ce4fc6adfe841e0e077e47ae4b8198bf1a2c6f4e7d5b16efc7a63aecda9c0a60
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to numerous compromised WordPress upload directories, suggesting an attempt to host malicious content or redirect users to phishing sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8201

Heuristics 5

  • 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
  • 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://walkandsmile.com/userfiles/file/5853649201.pdf In PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/179a46b234db3449473f41c6e4eb7d30/37135841530.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210516123626.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/f5360e5d4756f265e02390997dfd41e7/72729856228.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/7af7312cc25ea113d127c70fdc1b2a59/vodezibesa.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb38325b27---77751578170.pdfIn PDF document text
    • http://intergeored.com/upload/File/17718855255.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/5843c47a20d6d8b23d46a5ecc617d9d7/31632100639.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/a40b6170dd758b355629481166d23ebd/tokuzarulutitekagoj.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609059c31d819---98003527386.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/seq1cqeh5qs2gf2vb4mjfjo3el/tanaxojusofigopefabitaka.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/wedexoruzuvugari.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/98210499131.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/eb87526b568ff798b054c2fdc34ff8b0/99875342457.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=amalgamation+of+firms+problems+and+solutionsPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FF 5492 bytes
SHA-256: 648853cba3ee36aefd059645f9682b63c7cacf0b2fa4ae2cf09b1996460b94f8

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