Malicious PDF — malware analysis report

Static analysis result for SHA-256 620c4ed74e25c80c…

MALICIOUS

PDF

66.3 KB Created: 2021-02-01 16:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 50ff443362cc4318105e2acd9406a9f8 SHA-1: 7b952536e249f2cc0a7f4673545e18d8074d77db SHA-256: 620c4ed74e25c80cae66ace5413be283ee744071d582646852676ffd0760b2ce
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://leonvi.ru/aws?utm_term=holter+report+template PDF link annotation
    • http://hookup673.site/55120299560cbx2o.pdfIn PDF document text
    • http://lovechat24.club/jali_design_patterns5xz6r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403960/normal_60093dbac5425.pdfIn PDF document text
    • http://fullstacket.online/bosch_dishwasher_smu68m05au_repair_manual3hbvw.pdfIn PDF document text
    • http://ighelpcenter.xyz/199719909059h4jg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_6016c5212ddc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383446/normal_5fc89e5e6e246.pdfIn PDF document text
    • http://salestore.pro/operations_and_supply_chain_management_for_mbas_6th_editionj8ubt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459175/normal_5fe4ea5acf285.pdfIn PDF document text
    • http://lavkavkusa.store/lixapojudip1rmxg.pdfIn PDF document text
    • http://dorightpress.com/absolute_value_transformationscclz1.pdfIn PDF document text
    • http://twoup-viktoria.online/43862585530wuj40.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/gotitibekovi/jasper_report_visual_studio_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/calendrio_menstrual_cherry_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/35138610225.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_off0000c8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8FC 4748 bytes
SHA-256: 7243236b12a1784d3660c34f002b2f2d31b8329f225d33b959d6156215bc5496
font_01_sfnt_off0000d902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD902 10496 bytes
SHA-256: 7ec188c1cae52d82501f4dbf15f45cfb26d0595d5439bc93dc6942e2e2302c9f