Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbf9c9eb35ba7b47…

MALICIOUS

PDF

68.1 KB Created: 2021-03-05 14:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bf2d6282a1356e09baafde58179231a8 SHA-1: c51c8a839756d919d459311250fefc457d468843 SHA-256: dbf9c9eb35ba7b4778ac8a0601ce40f0d99a615b658302f43ce587e21f3ee7c5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9678

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=sub+zero+fridge+review+australia PDF link annotation
    • https://vunisanege.weebly.com/uploads/1/3/0/8/130813420/bamisozezapakave.pdfIn PDF document text
    • https://vifejekim.weebly.com/uploads/1/3/5/3/135322606/bb8f4eb00.pdfIn PDF document text
    • http://kolunikikirade.22web.org/lista_de_verbos_en_ingles_pasado_simple.pdfIn PDF document text
    • https://vomakitiba.weebly.com/uploads/1/3/1/3/131384058/foxewaj.pdfIn PDF document text
    • https://vigelabed.weebly.com/uploads/1/3/4/3/134368569/6831026.pdfIn PDF document text
    • http://vavoferidedodif.66ghz.com/goals_of_punishment_essay.pdfIn PDF document text
    • https://xegadoponuxi.weebly.com/uploads/1/3/0/7/130775279/230ab34bfda66a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/libosokune/nfl_week_14_2018_injury_report.pdfIn PDF document text
    • http://nekodigeteremi.rf.gd/67613989429.pdfIn PDF document text
    • http://vazojebimuvap.epizy.com/flute_sheet_music_gabriel_s_oboe.pdfIn PDF document text
    • http://zometebuwafuwix.rf.gd/mcgraw_hill_education_integrated_math_1_answers.pdfIn PDF document text
    • http://vofofoduwegakuv.rf.gd/fodom.pdfIn PDF document text
    • http://gegiratafalor.epizy.com/nelson_grade_12_calculus_textbook_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/charlotte_bronte_biographical_information.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/91915598878.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/juzipejategon.pdfIn PDF document text
    • http://wexereza.rf.gd/huron_county_ohio_sheriff_reports.pdfIn PDF document text
    • http://dupumimegijema.epizy.com/dictionary_of_forensic_science.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE3 5520 bytes
SHA-256: 486f6f8590bd2dca77d558af69a99f6724ca82f5a2c23f1235855a0a1d36f9fc

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