Malicious PDF — malware analysis report

Static analysis result for SHA-256 765b5032d5269442…

MALICIOUS

PDF

16.0 KB Created: 2020-10-10 02:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb36536d32e470d9ce4e40bf533c8c6 SHA-1: 7deec460970a841e1aeefcfbd5d46ff396d3b4ba SHA-256: 765b5032d5269442af37ce4d7e81f6372afe1caaacfa7c8cc9940a1ce3c34366
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious due to its structure, which resembles a screenshot lure designed to trick users into clicking a link. The embedded URL, https://cctraff.ru/strik?keyword=el+pollo+loco+nutrition+chicken+avocado+bowl, is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this file is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 16 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://cctraff.ru/strik?keyword=el+pollo+loco+nutrition+chicken+avocado+bowl
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    • https://uploads.strikinglycdn.com/files/317b0116-5a15-4fdf-8665-9e8bd2b48569/budiresato.pdf
    • https://uploads.strikinglycdn.com/files/9414e972-1902-4463-8524-8a4b8ff9f636/gaposezekusadalerom.pdf
    • https://uploads.strikinglycdn.com/files/abc86fa1-55ad-4eb8-aa42-5047c346fb37/27547851827.pdf
    • https://uploads.strikinglycdn.com/files/a49cf4e0-e225-4ef6-bba8-1208b3749f1c/marugeluteza.pdf
    • https://uploads.strikinglycdn.com/files/0b853cc0-7fb1-497e-b004-b70cec31a058/64793000614.pdf
    • https://uploads.strikinglycdn.com/files/fe489760-1bcf-4763-91d9-8517e0db3e57/toxanenimeganoseku.pdf
    • https://uploads.strikinglycdn.com/files/d9d36b20-9e3b-49ab-9d44-cdf31c211c9b/giniwesaxujolu.pdf

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