Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7bab9c32065393c…

MALICIOUS

PDF

76.3 KB Created: 2021-03-02 12:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7757c9298d2b3f4019eaf94233bcd977 SHA-1: 8e8f25e932f9c9017d5e32abdb8c87093141e19e SHA-256: e7bab9c32065393c0d3d6849aaa7dd1d1a3be415844c12554add814ab09ba206
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs pointing to external websites, many of which are hosted on disposable domains or appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8168

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://baarspo.ru/award?keyword=yamaha+ypg+535+vs+635 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369774/normal_5ff4756d37068.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/how_to_start_a_travel_story.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_5fd5f6d5a749c.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/msi_afterburner_gtx_970_overclock_settings.pdfIn PDF document text
    • https://karoxenerom.weebly.com/uploads/1/3/0/7/130739074/b0b903f60eba7c.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/61834536505.pdfIn PDF document text
    • https://dalosetog.weebly.com/uploads/1/3/1/4/131412235/8afe7c3ae49.pdfIn PDF document text
    • http://chambrehub.xyz/masque_of_the_red_death_rooms8exrz.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/wenolavavaxujotapine.pdfIn PDF document text
    • https://peketodofow.weebly.com/uploads/1/3/4/5/134589962/gepujigez_zajakakuzosila_xaponesinub.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/52652920119.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/basic_sql_query_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/89951720412.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/59330056580.pdfIn PDF document text

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