Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5401b638150629…

MALICIOUS

PDF

37.3 KB Created: 2021-03-24 02:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 62a861698ecbeae073404e2807fd85ba SHA-1: 9923b321a9c357e7996b217c7367b892e2689599 SHA-256: fa5401b638150629c62bf9239f5f4eb587886f5b6d935fe6f0bf868da38fc6d2
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a phishing lure due to its image-heavy nature and embedded clickable URI. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to a malicious site or download further content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5704

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
  • 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.
  • 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://botokaw.ru/award?keyword=certificate+in+advanced+english+book+2+pdf PDF link annotation
    • https://cdn.sqhk.co/sorifalemuj/NZhijbl/napuv.pdfIn PDF document text
    • http://circleshtang.xyz/xepawudetirenizipawhqgh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_600aefe63e087.pdfIn PDF document text
    • https://cdn.sqhk.co/sakiforivona/aRjhLja/88029327551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_6038d097b4a29.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e173a7b-b354-4e12-886a-e1177d8c0a22/what_ink_does_hp_officejet_6500_use.pdfIn PDF document text
    • http://pivunovukemo.epizy.com/how_to_repair_electrolux_central_vacuum_hose.pdfIn PDF document text
    • http://dajidagetulawu.epizy.com/gojapafezafewuz.pdfIn PDF document text

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