Malicious PDF — malware analysis report

Static analysis result for SHA-256 29caa813c1d5c595…

MALICIOUS

PDF

49.0 KB Created: 2021-02-25 09:27:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 05bbc5f537c3048b66ccee2f616a4fa6 SHA-1: 1fca76aa2e2501933ec0f346565326466189ed50 SHA-256: 29caa813c1d5c595f39115271b2d8e9a6f7f98496899ff8f49b138d9fe00e5b6
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The embedded URL, https://jottigo.ru/award?keyword=what+are+the+natural+sources+of+atmospheric+carbon+dioxide, is identified as a redirector for free-download phishing. ClamAV also detected this file as malware. No scripts were extracted, but the overall pattern suggests a phishing attack designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6121

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=what+are+the+natural+sources+of+atmospheric+carbon+dioxide PDF link annotation