Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2176cf6629a4642…

MALICIOUS

PDF

65.2 KB Created: 2021-09-01 04:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: cbe893688c2205730055a90fcd47cf36 SHA-1: 8acef6ae05568ff1c6e5b7237489e4af4826f244 SHA-256: f2176cf6629a464213468feee64c768899ed1e71fcb176b30f8ac7ae6ec09c75
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on disposable domains, identified by heuristics as a malicious phishing lure. The ClamAV detection and ML classifier further confirm its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7148

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160982a94db76b---58696161853.pdf In PDF document text
    • http://imaginove.eu/data/Files/44737254631.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/bobolokivalerufagerakejet.pdfIn PDF document text
    • https://thucphamtruongxanh.com/Upload/files/23700894461.pdfIn PDF document text
    • http://guidesdugrandlarge.fr/images/import/file/65485362909.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/59445914347.pdfIn PDF document text
    • http://au-coeur-du-temps.com/userfiles/file/34350945920.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/vebojumukagatujam.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021060406322773499.pdfIn PDF document text
    • http://novichiha.ru/pic/file/dewaroru.pdfIn PDF document text
    • https://stonebuild.bg/f/uploads/files/31958499164.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/15979737149.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612acaac078e3---sasazaka.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=clearance+letter+for+resigned+employee+pdfPDF link annotation

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