Malicious PDF — malware analysis report

Static analysis result for SHA-256 658917fbeb380dac…

MALICIOUS

PDF

67.0 KB Created: 2021-08-02 11:10:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 195c588635350ceceaf8fd64c85c803c SHA-1: f96a74249889c3e803361ad04b5e814deb4aae6d SHA-256: 658917fbeb380dac2609ff78e834d75ba2b51f62c5969420b99a7e52ce4739f1
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8876

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://crysiq.ru/uplcv?utm_term=can+i+get+minecraft+windows+10+for+free+if+i+have+pocket+edition
    • http://ceraunavoltapizzeria.it/userfiles/files/xegidufexabiwuxewuwososik.pdf
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/3qpgdvjskf92v0dbttqd00iip6/rapubirovadujopu.pdf
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/38092edf7a44def937f7dd8159867c2b/posatekegirewafak.pdf
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/7e4d96cbb307c000f694e9e4af8a7b63/98970308441.pdf
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d18a7bb5494---lifudeloko.pdf
    • http://mientaytourist.com/uploads/files/fasemoki.pdf
    • http://duonglaohanoi.com/userfiles/file/lajabo.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/29lllri29m0i8inmkc3kqsmtsb/79908822852.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/40ee0e1a5328bdfbfc5b096a9d0327d9/19280724269.pdf
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zipopobunegituniduzilodu.pdf
    • http://www.peretprod.ro/content-images/file/76772125893.pdf
    • http://firewheels.pe/userfiles/file/rolefibowebegomotinifor.pdf
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/f8167d4611f7de5daf9f23b5bfe4240c/6923314869.pdf
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160b1cb8707137---tawanasapozu.pdf
    • http://carlaschroyen.com/content_docs/nusumamovotudaw.pdf
    • http://hockeydh.com/files/ups/files/matafukanisemame.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076606213310---69020319093.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ppacg911nj3ttrm464e7av3j46/34315042260.pdf
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/68749nrdemtgqhge02qadeku62/kezefufawufoxebamelubi.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/ef1drucaa9s5t0gbeb0tkr32dr/viposefiposurimezemipi.pdf
    • http://hoteldazegliotorino.com/userfiles/files/46045681706.pdf
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bda98b1da0c---52661653329.pdf
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/6ab306fa299bb3ef09a4ec35e06eb4e1/lupagimizisikel.pdf

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