Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ef4af43d53cfe3…

MALICIOUS

PDF

55.8 KB Created: 2021-02-27 03:58:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6c9b9ab49c6e890853d7555fc85eaff6 SHA-1: 108cb0e49fbd881ab8072a39c4de4080789fb8e7 SHA-256: 73ef4af43d53cfe346bf5512e33e63befbf7430ba669a42c905d5136683636d1
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6565

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
  • 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://dugedepap.ru/award?keyword=the+rich+brother+short+story+summary PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5fe6bc22eab13.pdfIn PDF document text
    • https://cdn.sqhk.co/suzeboxiwo/jjiecbB/pixel_art_candy_color_by_number_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380859/normal_602a79d835424.pdfIn PDF document text
    • https://palokeligiz.weebly.com/uploads/1/3/4/4/134496709/30ca9209.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/hdiddcK/butusadu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370078/normal_5ff57e6c51b70.pdfIn PDF document text
    • http://nokazakon.22web.org/zebra_zt410_direct_thermal_thermal_transfer_printer_with_internal_rewind.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501482/normal_60136084299fd.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/hgZmjg8/19435335039.pdfIn PDF document text
    • http://fupomogusi.22web.org/first_encyclopedia_of_science_usborne.pdfIn PDF document text
    • https://xufujakuzizam.weebly.com/uploads/1/3/5/3/135315974/xefajusufuvu.pdfIn PDF document text
    • https://cdn.sqhk.co/mawodoso/ihcieCA/airplane_controls_for_pc.pdfIn PDF document text
    • http://lefabafe.epizy.com/free_video_format_converter_open_source.pdfIn PDF document text
    • http://vevazodovojegos.rf.gd/grade_3_english_comprehension_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/vakijupo.pdfIn PDF document text
    • http://dinelak.rf.gd/direct_mail_advertising_template.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/full_form_of_indian_companies.pdfIn PDF document text

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