Malicious PDF — malware analysis report

Static analysis result for SHA-256 9738d97455840068…

MALICIOUS

PDF

57.9 KB Created: 2021-06-26 08:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2d455f3acbce077129a986eb69854c20 SHA-1: 33c9cd1cc3b99f29c677ff9557c354f5c3b3097a SHA-256: 9738d97455840068eea6e0bb1f995478d7c4c7f76c0f1e5e6c3c8958837cb71f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites hosting other PDF files. Heuristics indicate this is a link farm designed to distribute malicious content, likely a phishing or trojan payload. ClamAV detection confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6945

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1607457e033a3f---deraguv.pdf In PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/322afd52bfcd86f05ec98cacee91e0aa/lipaze.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/32630268502.pdfIn PDF document text
    • http://aliglobshop.com/userfiles/file/vuwijowanusugirubedewaka.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a63fd89faf6---81382434177.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/814840ae7c92d4718a80563401984e38/81456183663.pdfIn PDF document text
    • http://1960vonsteuben.com/clients/d/df/dfb5e1b83ea85bfdc5ef1da934264264/File/suwixewekefitewabalite.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/0d517e72f7728a70e41343a8f1cdf847/gazutivip.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/7f411c00eb3010b5503cfeed2ee332d9/17298957275.pdfIn PDF document text
    • http://pobierzplik.pl/uploads/files/lozog.pdfIn PDF document text
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/vfkgn61k8ikgv5p27tt64jdqo1/84988437183.pdfIn PDF document text
    • http://coral-travel66.ru/admin/ckfinder/userfiles/files/69699839387.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/d9ae62ba4bff0c5e925e7c2357529157/domodulezajukizelebizax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=dungeons+and+dragons+5th+edition+modernPDF link annotation

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