Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf9de868204bb00…

MALICIOUS

PDF

59.9 KB Created: 2021-03-02 17:50:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8bdcb369a5e9d5ed0e88411a05f8925d SHA-1: 222b6c640cecc7eb55799e97b0d476ab0915f91c SHA-256: daf9de868204bb00a9ebf14fdeda40c67e86818c35aa2e9aa3e539e00645c7da
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, with high-confidence heuristics indicating it uses an image lure to redirect users to an SEO redirector. The primary IOC is the URL https://nipisod.ru/award?keyword=how+to+fix+fridge+leaking+water+outside, which is presented as a guide but likely leads to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and URL suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9486

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://nipisod.ru/award?keyword=how+to+fix+fridge+leaking+water+outside PDF link annotation
    • http://20970907.net/38874394315bumc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_601de49b641f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380392/normal_6007f75859b36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_6003cbf95531c.pdfIn PDF document text
    • http://vamoktin.ru/gimivovigogowupi0qqp4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495975/normal_60072a4a475cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446930/normal_5ff55e3a89d91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402936/normal_5fdd05c531955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_6015a1b64b17c.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/oracle_sql_queries_interview_questions_and_answers_for_3_years_experience.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464065/normal_601c5e74c17f1.pdfIn PDF document text
    • http://clipshd.design/95766548278tmumd.pdfIn PDF document text
    • http://tugidunamoz.22web.org/84091909092.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/82374626165.pdfIn PDF document text
    • http://lenixad.epizy.com/darkest_dungeon_brigand_vvulf_guide.pdfIn PDF document text
    • http://fazafof.rf.gd/24_inch_davins_for_sale_craigslist.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/jaxonov.pdfIn PDF document text

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