Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e626f9455e059ce…

MALICIOUS

PDF

53.9 KB Created: 2021-09-06 15:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f9da3876ca0e99383276d3419bb3cc02 SHA-1: d098a985fc01478a350e299c44e931eec3e8b5db SHA-256: 1e626f9455e059ceaca1ff8d57dd6d3e82f598d68dea65bbbd8ac2a3f5a41d75
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of external URIs and link farms indicates an attempt to distribute or host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6882

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 http://hiroi-es.info/yamituki-n/uploads/files/duxababofot.pdf In PDF document text
    • http://thesecurityguardunion.ca/userfiles/files/bomazenutudawa.pdfIn PDF document text
    • https://cincia.ro/ckfinder/userfiles/files/wopovadotofatigadaneb.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/15683734456.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/fe18a3eb5cea3db95cb256062735ce81/nininabefomurebi.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/20262451931.pdfIn PDF document text
    • https://regaluxiluminacion.com/uploads/assets/file/84838567962.pdfIn PDF document text
    • https://khanikango.in/file/romimuvo.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/f373a553d76cac71a36b2d88c212dd4c/69914152464.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/6098481011.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/28030fdd8814b4811e4319c3652a1921/87121114664.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160cf7302dd11b---22916554238.pdfIn PDF document text
    • http://packamate.com/userfiles/60657681288.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/1922692752.pdfIn PDF document text
    • http://raduzhniy.cIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=curso+de+manejo+de+redes+sociales+pdfPDF link annotation

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