Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6d59cf64d03f1c…

MALICIOUS

PDF

37.1 KB Created: 2021-09-17 17:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: c1093d4e605ad09f3e279525a01e227d SHA-1: 09aa723d345a23854be9ca223137359b16f4d0f7 SHA-256: ae6d59cf64d03f1c90792ed8f0f466591195f374e8663c01b596eb9b5c3779d0
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF is identified as a phishing lure due to its small size, image-heavy content, and embedded clickable actions. The ClamAV detection and ML classifier further support its malicious nature. The document likely aims to trick users into clicking on one of the embedded URLs, which could lead to credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6667

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://belv.ru/userfiles/file/mizoguxawekoxibo.pdf In PDF document text
    • http://guerrazzi.info/userfiles/files/loxalogelagok.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613567b5bd81f---88633302341.pdfIn PDF document text
    • http://joltiy.ru/uploads/files/xexobapetixavu.pdfIn PDF document text
    • http://rickgrisolia.com/userfiles/files/50171004871.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408d06b4bcd---59141764298.pdfIn PDF document text
    • https://albertoangel.sinecsas.com/ckfinder/userfiles/files/depizafosakapin.pdfIn PDF document text
    • https://natinsel.com/imagenes/file/8614571290.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=life+star+apkPDF link annotation

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