Malicious PDF — malware analysis report

Static analysis result for SHA-256 9212a46c19f88222…

MALICIOUS

PDF

62.3 KB Created: 2021-08-01 08:59:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d16b36acf9fcdb844eb74c9ec6d6c9af SHA-1: 27b90f9210935f47bac6ec83dd079373c50fb105 SHA-256: 9212a46c19f88222de4b971c80c6fec65632ab47d931124a9e5be0706e3d12a9
154 Risk Score

Malware Insights

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

The PDF was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. It functions as a link farm, with many embedded URLs pointing to external sites, some hosted on compromised WordPress uploads or disposable domains. These links are likely intended to lead users to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8633

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://okud-istra.hr/userfiles/file/fidupumumezipakawuba.pdf In PDF document text
    • https://aduanaldelvalle.com/userfiles/file/belokefagut.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160adea9a7ff2d---96927054798.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa7bf203a4---xorudolezonal.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c21946d89bf---wuxubikuxaserazej.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828e8447895---tinevonulumizugitap.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/80ba0765afffc9f1a70ebbed0546dd57/42088458605.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bec6b8e182e---nifutoru.pdfIn PDF document text
    • http://brooklinehs1964.com/clients/6/6a/6a3559cec3eb17f551da2d864c8c85ab/File/botesoxivevewolofiteze.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160afaef84e75d---24658695480.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/vepuxixiw.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4e2b877422.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/gelotijuzelur.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/2292770995.pdfIn PDF document text
    • http://dollreunion2020.com/clients/4/43/4392dc7a9e9236654a628da0af121bbb/File/28610687327.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/hpo5bmkrod2hqnk8blv4jjudi4/pirekotedejexitabivawom.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/1609731cd088f3---wakufufovosogaxugup.pdfIn PDF document text
    • http://eltonltd.ru/sites/default/files/uploads/tegixurezomevogasabizip.pdfIn PDF document text
    • http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/fivumezex.pdfIn PDF document text
    • http://www.kammerpop.de/files/file/97154816524.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/3f2e70231ed687be9710173e98afc981/divuvibogomimaji.pdfIn PDF document text
    • https://digireg.pl/upload/66820411962.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e54d18837d---xinizadurepotageso.pdfIn PDF document text
    • https://hotelexpert.ro/uploads/files/jabofesurokuluxe.pdfIn PDF document text
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/1bcvms44utd53kn3hfs54sajp5/pajuvegasegetelenam.pdfIn PDF document text
    • http://thepokewave.com/uploads/files/xusabizatume.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+write+i+am+waiting+for+your+replyPDF link annotation

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