Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe5056bcc05ad48…

MALICIOUS

PDF

70.6 KB Created: 2021-02-25 09:16:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6b286b8da33387fc294f33fc7e1b257e SHA-1: 52749d8c17c1b2eb0509d78d6872f5c0ceffb987 SHA-256: dbe5056bcc05ad48df13deff8f8fd0426d4e9df32bdaedcc783a448f0e8cba93
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=cursive+writing+capital+g PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465400/normal_600f227319538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_6036154c3703d.pdfIn PDF document text
    • http://servicesforsupport.com/xubivakejotufogejifilblv4.pdfIn PDF document text
    • http://vknart.xyz/zobikikamimitowulsub1k.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/navy_civilian_jobs_2020_online_registration.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424953/normal_600bc277ddc0c.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/bruce_lee_greatest_movies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501214/normal_5fd62edb5be4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475582/normal_6034d4f9ee2d5.pdfIn PDF document text
    • http://infonewstravel.com/mofirizawenif4o5f.pdfIn PDF document text
    • http://luchdobro.site/tetipib2zq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457843/normal_5fcb22491f778.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/sovozipodiz.pdfIn PDF document text
    • http://leledup.mypressonline.com/mabubeju.pdfIn PDF document text
    • http://sale20.site/gurifiwajipiwudivufopfb4y.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/9-2_skills_practice_solving_quadratic_equations_by_graphing_worksheet_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulutugorivexek.atwebpages.com/sports_illustrated_swimsuit_models_kate_upton.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_off0000d90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90B 5160 bytes
SHA-256: d93298c6e6d9b9b538061163b3b90777b70c2c199cf7c93cd83e93a885ef5be9
font_01_sfnt_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 10164 bytes
SHA-256: bb8968621ff829ef143ef1765e09474e9b6051f2c4e863f24a83fc57e39e7799