Malicious PDF — malware analysis report

Static analysis result for SHA-256 f157f0f4e050589f…

MALICIOUS

PDF

69.9 KB Created: 2021-02-18 03:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 902071f53b2840a162caffb403f016f3 SHA-1: be786a706ab85bce78c99bb8d830c8890c0c3345 SHA-256: f157f0f4e050589f0593e499a7dff816f50e3d97bdf960b41a4695b01b8e3b32
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://maypoin.ru/strik?utm_term=how+to+replace+braun+oral+b+toothbrush+battery PDF link annotation
    • https://sasujenag.weebly.com/uploads/1/3/5/3/135337218/45db0808705.pdfIn PDF document text
    • http://konujojijitezu.iblogger.org/66849714261.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457876/normal_6008289969435.pdfIn PDF document text
    • http://nikiwibub.22web.org/kezeviponugit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485801/normal_5fdb7238a17a2.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/ge4V02l/tisapijefobapusi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417032/normal_6000515987af7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465024/normal_5fd7cb12ca79f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411921/normal_6020293e97002.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://runapapaxezupow.rf.gd/32534306071.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/texas_medical_jurisprudence_exam_study_guide.pdfIn PDF document text
    • http://surafupomef.epizy.com/linear_guide_bearing_block.pdfIn PDF document text
    • http://tuvilijemuze.epizy.com/dofufode.pdfIn PDF document text
    • http://lusalelafujijo.epizy.com/coronation_balanced_defensive_fund_fact_sheet_2017.pdfIn PDF document text
    • http://digegaleviverab.rf.gd/historia_de_la_administracion_pblica.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37B 5316 bytes
SHA-256: bce164447c39c74cf138d200a3358cf0db38c6f5dc25d6d1f91c46b1fe2e8285
font_01_sfnt_off0000e594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE594 10896 bytes
SHA-256: f84ac70334962d8137c65ea8dd32bb9bac74f5cd127dfb8ae431d90e5bdddd98