Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2a25d654890975…

MALICIOUS

PDF

73.3 KB Created: 2021-02-21 11:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fda540e925f63f08f4cc6755e20fc585 SHA-1: 7be263f318139dc89199f5619a5abbcba8ab5cb4 SHA-256: 9c2a25d65489097524edfa8240cf8a03fa6dec39f848577bc7fc9627a64e4a97
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=heir+of+fire+series+order In PDF document text
    • http://muldwych.com/luxitafubusapobiwusegebmnzed.pdfIn PDF document text
    • https://cdn.sqhk.co/tovasodoj/hgdByJb/wulinugotiwixorogatabena.pdfIn PDF document text
    • http://cashbackk.site/vexajejomisivuli3kow.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/jetoiel/werudozifiseribomixe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481285/normal_5ffac095a8335.pdfIn PDF document text
    • http://devgame.design/nopubudobidonidaxibdxvg.pdfIn PDF document text
    • http://italy50wow.pro/guardian_bl_novel_translationir7x2.pdfIn PDF document text
    • http://specialsale.info/year_end_report_exampleqtozy.pdfIn PDF document text
    • https://cdn.sqhk.co/fovipobex/jc4EQp5/78130834132.pdfIn PDF document text
    • http://barashik.space/break_time_vape_couponr7rk0.pdfIn PDF document text
    • http://alfa-quest.ru/edward_said_culture_and_imperialism1dgb9.pdfIn PDF document text
    • http://honey-love.ru/abecedario_en_letra_de_imprenta_mayuscula_y_minuscula_para_imprimir6nr3g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fcf00c24a314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458163/normal_602fea45ce19e.pdfIn PDF document text
    • http://marafonsport.site/58485071274fyc89.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/dazemi/63804731812.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/pocket_camp_villager_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/davinci_caramel_syrup_nutrition_information.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_off0000e42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42F 4620 bytes
SHA-256: 6b6945a4703b23cac0b0d16f6f7dd2f4dd9970fd19a359650579643faa04ed96
font_01_sfnt_off0000f3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F2 10740 bytes
SHA-256: aa4183c7ca324323305eb0fa4d53edbdcc3073efcedbc3cdbc807f6bcb81112f

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