Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2fdd24032dc593b…

MALICIOUS

PDF

51.8 KB Created: 2021-08-18 18:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 0a218628762fe40c925910deb4939e28 SHA-1: 4559a89857390e84ecb1ac848a5afe9d4516fea0 SHA-256: e2fdd24032dc593bb8e885ce3265862482cca6bc32642d5f745fe86324e28ff5
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which appear to be compromised or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document's primary purpose is to host a large number of links for SEO manipulation or to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8750

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://privatecambodiatour.com/userfiles/file/59605122018.pdf In PDF document text
    • https://securityguardsupply.org/php/uploads/file/23941906664.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/s076rvudeqbhpbp6gj167qhsh1/jofasepibe.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/xebosusowepotisodusok.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/164c7260fcb5bcef81e8c467dc0a9114/95313088770.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/2a5f4467928ec4ba5a550dc80fc1f8e8/60563281150.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/5eeaa89e3516e5ee5713aecb216e7b90/82078175714.pdfIn PDF document text
    • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/newifesokesaxariga.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/7331cqb724aae7sk8ojfo99s10/jabenuxesore.pdfIn PDF document text
    • http://group-anons.ru/userfiles/files/13168688762.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a241c4de39b---33889934088.pdfIn PDF document text
    • http://poongdung.com/FileData/ckfinder/files/20210719_E63439F5D474B2D7.pdfIn PDF document text
    • http://alphanaturehk.com/userfiles/file/bukesaziwinovinefi.pdfIn PDF document text
    • http://mientaytourist.com/uploads/files/9960682760.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/fd940bf72b9d1709ea06d5fd2d6aa75e/zuguk.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606eaa314e072---74956887757.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/xifatuxujekavi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=evaluation+sur+les+tables+de+multiplication+cm1+a+imprimerPDF link annotation

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