Malicious PDF — malware analysis report

Static analysis result for SHA-256 e458891246922e8a…

MALICIOUS

PDF

57.2 KB Created: 2021-02-26 11:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e554ad65173750f34b4e3efdcd4c2b2c SHA-1: 451ad3b02863be7e83a4a9f77de060f93d04539e SHA-256: e458891246922e8aedf3aeb75404a79b1e97065cb14feb4f4134ceb49d743eeb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common lure to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9772

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://bologen.ru/award?keyword=how+great+thou+art+lyrics+and+chords PDF link annotation
    • http://vkysnaya-eda.site/51695121225wxy0q.pdfIn PDF document text
    • http://aycotoro6.xyz/xbox_beta_cold_war_datesx5stk.pdfIn PDF document text
    • http://daddytestit.xyz/jevulavawujotizevalu7a7yt.pdfIn PDF document text
    • http://menformula.xyz/7018201246s86ha.pdfIn PDF document text
    • http://shmelev.pro/cambridge_english_advanced_3njw77.pdfIn PDF document text
    • https://ziropiwos.weebly.com/uploads/1/3/4/3/134311351/todaf_lajojesisejigin_felufum_dotupimu.pdfIn PDF document text
    • https://jadilibetaz.weebly.com/uploads/1/3/4/8/134871175/2388657.pdfIn PDF document text
    • https://tujobofawoti.weebly.com/uploads/1/3/2/6/132695409/4f575f.pdfIn PDF document text
    • http://ital-tess.space/penewizoximusivifumorkpobg.pdfIn PDF document text
    • https://novunafa.weebly.com/uploads/1/3/1/3/131379228/13933a.pdfIn PDF document text
    • http://maladovefo.rf.gd/the_sun_newspaper_uk_front_page_today.pdfIn PDF document text
    • http://jatuxijor.epizy.com/8210816760.pdfIn PDF document text
    • http://pojetol.epizy.com/printable_alphabet_writing_practice_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/free_online_marathi_books.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/annamayya_telugu_full_movie_hd.pdfIn PDF document text
    • http://lezujepadu.rf.gd/ari_lennox_shea_butter_baby_video.pdfIn PDF document text
    • http://lidiremuvuzanas.rf.gd/88378218736.pdfIn PDF document text
    • http://rubukemudug.rf.gd/71977283956.pdfIn PDF document text
    • http://mofikasim.epizy.com/brasero_disc_burner_free_for_windows.pdfIn PDF document text

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