Malicious PDF — malware analysis report

Static analysis result for SHA-256 a17d1b87148effca…

MALICIOUS

PDF

44.5 KB Created: 2021-03-01 05:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 52c618a07672558634ce680f70c7d455 SHA-1: 35497190192ba0f736da3d07cc8d927c3aaad170 SHA-256: a17d1b87148effca9a6e63f32e45ca19a1b31c68c96de180592cd610ca444656
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and the classification as a link farm strongly indicate the document's purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7750

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://xajibur.ru/strik?utm_term=coachmen+rv+stock+price PDF link annotation
    • http://form-lnstagramcopyrightservices.com/white_tiger_movie_netflix_castvktbv.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/KiXBEij/nugawolumofezegematemefu.pdfIn PDF document text
    • http://formulamoney.top/sagunezirutobavegatgl7m6.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/YijdB9U/cool_button_up_short_sleeve_shirts.pdfIn PDF document text
    • http://bomepufibawil.scienceontheweb.net/detagidexido.pdfIn PDF document text
    • https://sapigufebo.weebly.com/uploads/1/3/4/5/134592603/zofujeziso.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/7hhhiie/vevesenol.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/how_many_types_of_dopamine_receptors_are_there.pdfIn PDF document text
    • http://afracheat4.xyz/8960966320799z4s.pdfIn PDF document text
    • http://bilkaita.space/96466853769lsrah.pdfIn PDF document text
    • http://swiss-gear-top.xyz/what_is_stormy_weathers_real_namey7tz1.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/BhgAghg/today_s_date_in_excel_vba.pdfIn PDF document text
    • https://cdn.sqhk.co/gitesafuwu/0osUMR8/442449714In PDF document text

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