Malicious PDF — malware analysis report

Static analysis result for SHA-256 1577cc2ffc11ec18…

MALICIOUS

PDF

80.4 KB Created: 2021-02-28 07:27:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 3e975612b11cfeff43fa7f2f1ec6b422 SHA-1: adc793d4d52b179d3e750f93c2f743075f57270c SHA-256: 1577cc2ffc11ec18add2894fb99c7acec59df75e9ad2ee0ebf4e5e031c2694c8
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple external URIs and is flagged as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the presence of numerous URLs and the heuristic firings indicate a likely attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7446

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/award?keyword=pathfinder+2nd+edition+core+rulebook+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494669/normal_6014e8f0dea72.pdfIn PDF document text
    • http://o-karte-kopilka.com/sogeradewaxhgt0h.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/night_owl_wireless_1080p_panoramic_camera_reviews.pdfIn PDF document text
    • http://bilkaita.space/782314730823t9ts.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/eihNghy/soxozanolovivaxuwewo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475741/normal_6004da8cc0e3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423137/normal_5ff69cafc1c99.pdfIn PDF document text
    • http://wejnpowk.space/abu_garcia_silver_max_reel_partsyl2gu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392651/normal_602180db56852.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/26561491303.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/87580936564.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/kojopebowe.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/gisefunitotekiru.pdfIn PDF document text
    • http://xutenujute.myartsonline.com/best_way_to_shift_18_speed_transmission.pdfIn PDF document text

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