Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed07758ec0a3b19…

MALICIOUS

PDF

75.0 KB Created: 2021-03-27 12:26:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8192d7ebde269a89d8ae966209cf946 SHA-1: 1e97234becbe18a35ec81f835c1381b4e72b763f SHA-256: 3ed07758ec0a3b19000700ad9d3e7ea12d776171a7bfad01a7c56587858ef9dc
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The document body, though heavily obfuscated, contains keywords related to the embedded URLs, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8479

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://botokaw.ru/award?keyword=biopiracy+vandana+shiva+pdf
    • http://witikotuxigere.scienceontheweb.net/91823693498.pdf
    • http://bopugafuwu.scienceontheweb.net/who_is_the_bear_in_the_revenant.pdf
    • https://cdn-cms.f-static.net/uploads/4470400/normal_603c02ab252f6.pdf
    • http://parkji5x.xyz/dogfight_movie_streamingmx1nb.pdf
    • https://cdn.sqhk.co/motuwezelu/0WhgoSN/jubevos.pdf
    • http://minesaxofunawi.getenjoyment.net/interior_design_diploma_nyc.pdf
    • https://cdn.sqhk.co/gomurabog/jzhahd2/lebujosaraxerowotezemu.pdf
    • http://vigirorimikana.medianewsonline.com/74404491709.pdf
    • https://static.s123-cdn-static.com/uploads/4470537/normal_5fce0ea5b19e4.pdf
    • http://theboldpantsproject.com/tyre_pressure_conversion_chartwtfwq.pdf
    • https://static.s123-cdn-static.com/uploads/4462736/normal_5fe2436a485cd.pdf
    • https://cdn-cms.f-static.net/uploads/4375341/normal_6054b3cff2b2a.pdf
    • http://distornyup.site/lajefijepigumutiwuwi9y0c.pdf
    • http://makamar.tech/medical_fitness_certificate_form_for_job0co4h.pdf
    • http://mimivamefigupe.sportsontheweb.net/current_affairs_january_2020_in_english.pdf
    • https://static.s123-cdn-static.com/uploads/4497346/normal_5fcc52975f33d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fadudenomo.onlinewebshop.net/robujagikefaxawagarox.pdf
    • https://c2c662fa-00ac-4c69-bf5d-04da7d6c99e2.filesusr.com/ugd/9b33c5_289474245afb447294541cfa76eea1f0.pdf?index=true
    • https://eb72eaa1-ef55-40a3-a653-f6d21bccf295.filesusr.com/ugd/54913d_b5c12c73975f467e8bf8b1fff8020b4f.pdf?index=true
    • http://xepuzakudera.atwebpages.com/emotional_and_behavioral_problems_in_adolescence.pdf
    • https://52c77544-2eb8-427c-ad0e-a8a7e2ea9366.filesusr.com/ugd/93288f_250fdf19dd0547118557cd80173c0fd0.pdf?index=true
    • https://24976a62-ea59-4ca6-8500-d0bd08f9a094.filesusr.com/ugd/65a075_3dc3140b58474bb68a9a7b42064b3f8a.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001184f.bin
ea02e64f0ea839811c76dd7757d3be9d1050f52c4eb535fb99886db9b3078f6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1184F 5424 bytes