Malicious PDF — malware analysis report

Static analysis result for SHA-256 028ef3c31f26477e…

MALICIOUS

PDF

37.6 KB Created: 2020-11-19 06:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0cede6619e6d0736a4fc7b4070d11ed1 SHA-1: 9fbe9fd2603a1ca478afbc02f28c956805464237 SHA-256: 028ef3c31f26477e07e0bb134223e21e3dfb436444999b134f17c7c839ca5df2
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a phishing lure due to its image-only nature and embedded action trigger. The primary IOC is the external URI pointing to 'trafftec.ru', which is likely used to host a malicious payload or redirect to a phishing page. No scripts were extracted, but the PDF structure itself suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9243

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://trafftec.ru/aws?utm_term=careless+whisper+song+lyrics
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5fab3c2319df9.pdf
    • https://cdn-cms.f-static.net/uploads/4375908/normal_5f8d735f1fa6e.pdf
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/da5d308e385b0.pdf
    • https://cdn-cms.f-static.net/uploads/4370071/normal_5f90f5301207e.pdf
    • https://cdn-cms.f-static.net/uploads/4381291/normal_5f95731396fe2.pdf
    • https://tafopolen.weebly.com/uploads/1/3/4/3/134396822/c6c3236e7942fcf.pdf
    • https://nufirejibojo.weebly.com/uploads/1/3/4/6/134645492/cf04810ca74.pdf
    • https://uploads.strikinglycdn.com/files/df3b8430-08e9-4c61-b38c-55d09b712a31/somufejeruzesodenuxisopa.pdf
    • https://uploads.strikinglycdn.com/files/1dd087f2-4fc4-421b-9eb4-4da1321dee97/96969093398.pdf

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