Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9b039dfa333ea64…

MALICIOUS

PDF

59.4 KB Created: 2021-03-20 20:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6a2164f94c339212f58476b4ec2bec63 SHA-1: 5a22d520dda7a49faecbf2450f9e5ed0e622b415 SHA-256: c9b039dfa333ea64d633562a533026d6fa6e3e60b4f60095f883c5cf9d921696
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6893

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://maypoin.ru/aws?utm_term=how+to+fill+a+humidifier PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481675/normal_5fd657d00a451.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/ifb8hhP/86755712587.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/FUmiahe/wallpapers_for_laptop_anime.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/call_letter_for_interview_sample.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472763/normal_5ffa41d4f022a.pdfIn PDF document text
    • http://muxoman.mygamesonline.org/ansiedad_y_depresion_sintomas.pdfIn PDF document text
    • http://bepifukikuku.mygamesonline.org/kusebuxarudarupaka.pdfIn PDF document text
    • http://gapilojazixo.getenjoyment.net/prime_time_6th_grade_math_book_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/jerusuxelek/aY48Uhf/crowd_city_unlimited_time.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/puzzledom_fill_answers.pdfIn PDF document text
    • http://niwurekatexo.atwebpages.com/mental_maths_worksheets_for_class_4.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/cedron_propiedades_medicinales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38134321-0555-4b42-993b-3e8869dc8150/36508945986.pdfIn PDF document text
    • http://nowimirozox.atwebpages.com/fiwozoxopi.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/blank_html_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c293f7-ee0d-431e-a0bd-82322b87d8e8/82271158230.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/antologia_de_cuentos_juveniles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60267267-91a1-4a96-8e07-2073e4549b79/yunus_cengel_heat_transfer_download.pdfIn PDF document text

Related samples 8

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