Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9ef64e8c8b6784…

MALICIOUS

PDF

50.6 KB Created: 2021-03-03 21:35:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2bbfe16d049c33294e16eed9dc3e6650 SHA-1: ed44b810c129e8e9b1b3f4e86cacd670d3a63507 SHA-256: 9f9ef64e8c8b678469721d77b9f346a52cc7252fb93a1d7d43970bbaeec8821f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to marketing ebooks and technical details, likely serving as a lure to encourage users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8547

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://nipisod.ru/strik?utm_term=social+media+online+marketing+ebooks PDF link annotation
    • http://bestgirl69.com/tabla_de_integracion_de_funciones_trigonometricase2fjx.pdfIn PDF document text
    • https://xamifixi.weebly.com/uploads/1/3/1/8/131871938/nokekakalemupu-fobex.pdfIn PDF document text
    • https://gojufepegaxop.weebly.com/uploads/1/3/4/3/134339744/e24c87f.pdfIn PDF document text
    • http://nakodinita.scienceontheweb.net/3_letter_airport_codes_in_india.pdfIn PDF document text
    • http://setopin.mypressonline.com/94476436217.pdfIn PDF document text
    • http://olymp-trade.top/girufaladup94fe.pdfIn PDF document text
    • http://natur-bio.space/32962473047bbm8r.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/danby_12_000_btu_window_air_conditioner_costco.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/chbieTz/gazanabenabanakazodiposu.pdfIn PDF document text
    • http://fakexexu.sportsontheweb.net/97301405101.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/82970032213.pdfIn PDF document text
    • https://putofikanavo.weebly.com/uploads/1/3/0/7/130738484/8de6a405c828f.pdfIn PDF document text
    • https://fumuradowije.weebly.com/uploads/1/3/0/7/130739974/7368900.pdfIn PDF document text
    • https://cdn.sqhk.co/tosolizidovi/mrgihaG/51971495820.pdfIn PDF document text
    • https://cdn.sqhk.co/pavupaken/iOLWIwt/super_bowser_logan_vs_jeffy_run_adventures.pdfIn PDF document text
    • http://bavatesivo.myartsonline.com/papod.pdfIn PDF document text
    • http://suvalomimo.atwebpages.com/what_is_the_relationship_between_integrity_and_ethics.pdfIn PDF document text

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