Malicious PDF — malware analysis report

Static analysis result for SHA-256 1381fdb487347fe9…

MALICIOUS

PDF

68.7 KB Created: 2021-03-13 14:26:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 15c904caa5b64266ec81b3ff930e8484 SHA-1: da673eb75dbef192d2f507c71ea799e06599ffc8 SHA-256: 1381fdb487347fe93560a4298f2583e6b25793344f31050c0e8553c21fb52d43
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it is a phishing lure, using an image to redirect users to a malicious URL. The embedded URL, https://jottigo.ru/strik?utm_term=daring+greatly+brene+brown+quotes, is identified as the primary indicator of compromise. While no scripts were extracted, the overall structure and heuristic firings strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6346

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 lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/strik?utm_term=daring+greatly+brene+brown+quotes PDF link annotation
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