Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e462395f1a8336…

MALICIOUS

PDF

69.4 KB Created: 2021-02-12 08:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 83a0e34d048546c0c1463f40c006344a SHA-1: c527eaa17087f2eba51d7d9345d83c1d27b98216 SHA-256: d3e462395f1a8336302ede4258cf52f107057746b415fdf943be5a73da37e9c3
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/wix?keyword=hitachi+table+saw+c10fl In PDF document text
    • https://posenumu.weebly.com/uploads/1/3/0/7/130776111/fadaxabidokafaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449193/normal_5fd685f347465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446649/normal_5fd9c9572c570.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490252/normal_600260daba3b6.pdfIn PDF document text
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/5801574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456128/normal_601d837429248.pdfIn PDF document text
    • http://shop-kid-toys.online/bhoomi_online_parihara_report_2017e3yr6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_5fd7dea625ce1.pdfIn PDF document text
    • http://sluzhba1.net/rumbo_en_topografia5b62j.pdfIn PDF document text
    • https://vulewerogoxo.weebly.com/uploads/1/3/4/5/134507491/cd0a57d97777.pdfIn PDF document text
    • https://cdn.sqhk.co/radojiga/glDSVfr/96368157768.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/ujfib0z/costco_bakery_personalized_cakes.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/satuja/financial_calculator_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/asquith_primary_school_morley_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/french_to_english_translation_app.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_off0000d452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD452 5260 bytes
SHA-256: 24341c580ce713fc5700e82427415174fe0dafb81b99ddcc8e981c49e8aaa44a
font_01_sfnt_off0000e64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64D 10100 bytes
SHA-256: c2d9ceb64d10b8d9c4e511f6698f5352f571a8b9f8ec82955af6af0b59733f7d

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