Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6cb89bd523bc2dd…

MALICIOUS

PDF

69.8 KB Created: 2021-03-03 19:01:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 427d2ae6adde9975c1e513983d526ef6 SHA-1: da9ca251a6f87ea8f4103cd8085c00509460252f SHA-256: b6cb89bd523bc2ddb6ae267212cbe22a3c408d3a74f5ed03837a9803de82b0a4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://soxebez.ru/wix?keyword=child+and+family+guidance+center+mesquite PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495265/normal_5ff9e247d210f.pdfIn PDF document text
    • http://vumamanepu.sportsontheweb.net/45014148771.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_5fd7b2ec51f59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388271/normal_5fde26708c09a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_6022622889a8a.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/mebutetaliw.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/pexoninotagutadopobadepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446151/normal_6016c33ad811f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_6036fc9985d91.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/hiwghje/48815772286.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/kugelilizibuwum/microsoft_dynamics_365_business_edition_licensing_guide.pdfIn PDF document text
    • http://muzulozak.atwebpages.com/30059576638.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_off0000d4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AD 5568 bytes
SHA-256: 05b2112dac754b23f958f3ab42add2bf374dfec73dd6a4379fcb99fcaa189791
font_01_sfnt_off0000e772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 10152 bytes
SHA-256: cb32f8ec72d340ec55611c29c58198f5c96e751563ef687496e226f7e9fd7370

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