Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32dada2482c5873…

MALICIOUS

PDF

66.5 KB Created: 2021-06-12 16:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f56220bfd52724955f7324201244e013 SHA-1: dd5dcf9c7e7245990a5f7edadf1a36b9d3e2c16b SHA-256: b32dada2482c58731429dbba146439467ca826e3561436d2aa5d83a4c6849e3e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 0.7003

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://drafthe.ru/pbw?utm_term=frazzled+book+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470402/normal_60c0bce087fae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495536/normal_5fdb1c1063c55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490272/normal_5feb0e3e6d9bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386354/normal_603bdb4476aac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411512/normal_60bbad18e9672.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4501514/normal_60b41f0750d28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_6021aad4af6a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451545/normal_602e452627395.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eabcdc8d-b728-4fd9-80b2-5d2fbef93aa1/julius_caesar_film_2018.pdfIn PDF document text
    • http://jasiduvegulu.pbworks.com/w/file/fetch/144602199/what_is_classed_as_limited_quantity_dangerous_goods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d61d0263-acd5-440b-925b-7a058874f311/75235376991.pdfIn PDF document text
    • http://zuguwar.pbworks.com/w/file/fetch/144721005/bdo_guardian_template_korea.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d16673-3210-4be4-8a40-2a8637e5ca93/maboverizipitafiwejenu.pdfIn PDF document text
    • http://jojekepodef.pbworks.com/f/hp_envy_7640_printer_not_responding.pdfIn PDF document text
    • http://redejok.pbworks.com/w/file/fetch/144978210/zajezotezasoroweluroxikig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9490b687-8314-4df2-801e-4c48c678585f/how_to_weight_a_cricket_bat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d91c464a-2e1c-4c3a-96a1-f187b2dde5b1/vatefijoxewibubariru.pdfIn PDF document text
    • http://namikikis.pbworks.com/f/what_is_auto_reply_message_in_whatsapp.pdfIn PDF document text
    • http://katafuzum.pbworks.com/w/file/fetch/144585957/best_sensitivity_settings_for_pubg_mobile_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b3750ac-a73a-46e3-b7b0-cd890f620ec7/omron_bp742_hem-7200-z.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84d9955a-4305-404c-b437-1b475707914e/plant_physiology_and_development.pdfIn PDF document text
    • http://lipovosufuk.pbworks.com/f/nucleic_acids_structure_and_function_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a5f3469-415e-4993-bb67-a689d850a205/how_to_call_better_business_bureau.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_off0000df26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF26 5160 bytes
SHA-256: 75901f5fe8572aeba0d5221219f14ec09e62f16dc5dd29120a3009d481100392