Malicious PDF — malware analysis report

Static analysis result for SHA-256 5109bb98d41bd37e…

MALICIOUS

PDF

69.0 KB Created: 2021-02-24 08:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8431b40fa3b8f5d3510283f5a4c983d5 SHA-1: af522a00040ad3b7493f22febc881b917a4f7d7e SHA-256: 5109bb98d41bd37efcc6d5fd34fc5ca7bfdadf0bc4d0d3a8d31c630b3632a609
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/wb?keyword=craftsman%2025cc%20200%20mph%20/%20430%20cfm%20gas%20blower%20spark%20plug In PDF document text
    • https://cdn-cms.f-static.net/uploads/4530323/normal_6029644276c75.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/85170603324s8qhq.pdfIn PDF document text
    • http://soinjaga.ru/55804726144x1bl0.pdfIn PDF document text
    • http://acupofjacob.com/naxudopj010b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476420/normal_5ffda155bb672.pdfIn PDF document text
    • http://espaceabone.com/babozumatudolenogikesodkxt5v.pdfIn PDF document text
    • http://golden-bridge.pro/nedijoxagekewepelu92f78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393889/normal_600db3276e7d5.pdfIn PDF document text
    • http://wersita.space/d3_pie_chart5y38h.pdfIn PDF document text
    • https://cdn.sqhk.co/zunowexafa/hjabhdP/fall_guys_running_fast.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jaXgeYJ/arcade_2002_old_games_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413125/normal_5fdf0f394f360.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/jfidgic/dinex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464739/normal_5fff8193ec23e.pdfIn PDF document text
    • http://therarbooks.com/astrology_natal_chart_report952uu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475582/normal_5ff7ff0ca71a1.pdfIn PDF document text
    • http://basvuruizleme.online/levasanepenejefaarmbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500432/normal_6003c07e8bac4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEC 6316 bytes
SHA-256: 5de5a8e1157c8adede6c92e0d08a89bb0ee1bdce26ed62cc7731381fe65efece
font_01_sfnt_off0000e363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE363 10220 bytes
SHA-256: 33abd6d7ff172e54de4f8fbac174fd4d010006c23ba1800e3caff8e44701069b

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