Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c2e71227e2ac75…

MALICIOUS

PDF

56.6 KB Created: 2021-05-13 10:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 245e01f170cc7f8d1b6977b4b1815211 SHA-1: 528d2fe1e7fbeabc3b3e316b5997f0d237207241 SHA-256: 66c2e71227e2ac754e40409ceddb0d3042ab38411b150be59a60bd8e8da1965b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or redirection scheme. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lead users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7659

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://jitolubupiloz.weebly.com/uploads/1/3/4/6/134637312/1b650f3126cdcba.pdf In PDF document text
    • https://sezitoxonuga.weebly.com/uploads/1/3/4/8/134886233/zimukowi-nuvad-majagizaxisule-nonovujenojubok.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/brandeis_university_map.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/como_trabalhar_no_consulado_brasileiro_nos_estados_unidos.pdfIn PDF document text
    • http://shopeuro.pro/ms_access_vba_programming5c7c2.pdfIn PDF document text
    • https://govuvafokixer.weebly.com/uploads/1/3/1/6/131607022/3455471.pdfIn PDF document text
    • https://jikesisepam.weebly.com/uploads/1/3/1/4/131406861/0caf0f6b2d88.pdfIn PDF document text
    • http://subfamjtii.site/lafikunutofolavelazixuwde4it.pdfIn PDF document text
    • http://crawlmqyu.space/brother_hl-2240d_series_toners0oe7.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/arquitectura_bioclimatica_en_el_peru.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/xolivofezaputafik.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/4NO0L8wlyOA/wb?keyword=how%20to%20program%20a%20uniden%20bearcat%20bc350c%20scannerPDF link annotation
    • https://s3.amazonaws.com/gitipelut/63118137081.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/how_many_years_should_a_pool_heater_last.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/37399427951.pdfIn PDF document text
    • http://madigekole.onlinewebshop.net/cirque_du_freak_books_ranked.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/72079821119.pdfIn PDF document text

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