Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41cba2df2dbba12…

MALICIOUS

PDF

48.0 KB Created: 2021-02-03 06:42:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5cb4ae7e1a739f9bb0a6293619a22759 SHA-1: bb3f0f75711e45d5127fdf77249a71436129eba0 SHA-256: c41cba2df2dbba1209355a39648d41a53a9d759874e8a995dbe60cc9f88f555e
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a link to a suspicious URL, identified as a potential phishing lure. Heuristics indicate it's an SEO redirector for free downloads, likely leading to a phishing page. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, but the PDF structure and embedded URI point towards a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9344

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/123?utm_term=how+to+play+song+of+storms+on+12+hole+ocarina PDF link annotation
    • http://scarcebook.com/loxibezanubaxazajusokukbgse5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474985/normal_6008c2fe8c165.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/ijUjijh/90360030028.pdfIn PDF document text
    • https://cdn.sqhk.co/fudikuzi/ijEoage/88992202259.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492897/normal_5fd08c454a795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383912/normal_5fec266729a0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5fdf49a225bc7.pdfIn PDF document text
    • http://trokot-newshop.online/urbanears_reimers_android_fiyatmjwjb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381289/normal_5fde8c03df92d.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/WNjzMqX/34625750778.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/jdXBEoa/dash_cryptocurrency_wallet.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/xgi6heS/samolugixijixetexi.pdfIn PDF document text
    • http://wupubobetob.epizy.com/minecraft_for_windows_10_cracked.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/53918343401.pdfIn PDF document text
    • http://wipojijize.rf.gd/multiplication_chart_1_12_printable_with_answers.pdfIn PDF document text
    • http://puguvapalovuzub.rf.gd/webex_room_kit_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/eastern_cooperative_oncology_group_ecog_performance_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/hotel_internship_report_ppt.pdfIn PDF document text
    • http://wigomevunafufo.epizy.com/information_meaning_in_tamil.pdfIn PDF document text

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