Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3da339d407da5df…

MALICIOUS

PDF

43.2 KB Created: 2020-11-23 20:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebf40f1eb14dc8dd81f08a6834df9919 SHA-1: 4fd000bad6b7c560981d412ad3758c61edf284a0 SHA-256: c3da339d407da5dfcfdf8d962badc692732a74d2d16cf37d32300bdc2f31b35d
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The 'PDF_IMAGE_LURE' heuristic indicates it's an image-only document designed to trick users into clicking an embedded URI. The primary IOC is the external URL found within the document, which is likely the destination for the phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9316

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 43 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://traffnew.ru/strik?utm_term=youth+bible+study+lessons+on+faith
    • https://cdn-cms.f-static.net/uploads/4479674/normal_5fb93c8a50559.pdf
    • https://cdn-cms.f-static.net/uploads/4379610/normal_5f915131ccbdb.pdf
    • https://cdn-cms.f-static.net/uploads/4407301/normal_5fa8ad3b0b244.pdf
    • https://cdn-cms.f-static.net/uploads/4444351/normal_5fbbcad382a62.pdf
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5fa30cdeeac58.pdf
    • https://cdn-cms.f-static.net/uploads/4457838/normal_5fb2f19d67d05.pdf
    • https://cdn-cms.f-static.net/uploads/4375890/normal_5f97777bc04a4.pdf
    • https://s3.amazonaws.com/jobavo/26357068857.pdf
    • https://uploads.strikinglycdn.com/files/1e7ea2a8-8205-4a50-b90b-6a4c4866eb87/arabalar_imek_hz_apk_indir.pdf
    • https://s3.amazonaws.com/rawesaragegugar/88393188955.pdf
    • https://uploads.strikinglycdn.com/files/faca5447-5041-4738-9dc4-d2a47cfa5d26/mujamolifumal.pdf
    • https://s3.amazonaws.com/lulelepese/jedogobelugobusum.pdf
    • https://s3.amazonaws.com/wonoti/veredimi.pdf
    • https://s3.amazonaws.com/felasorarabipis/rarivuxixuwejuwodusuk.pdf
    • https://s3.amazonaws.com/nokiva/bosufin.pdf

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