Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e410d9d879e5f1…

MALICIOUS

PDF

70.8 KB Created: 2021-02-12 03:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 65c164d017f7fba59a341145c7864967 SHA-1: 18d97231612d1acd3d9e8e882772acb694ba9dbe SHA-256: 95e410d9d879e5f1a87e91963f12b0e72c71cbf314ff5a26e092851d61251e10
184 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
  • 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/wix?keyword=growing+growing+growing+part+one In PDF document text
    • http://webdefilmizle.com/xedanekiun1g.pdfIn PDF document text
    • http://digerutejonoju.22web.org/60769690675.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_601574e8e7274.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376609/normal_5fee21ef26996.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388293/normal_5fce77031905b.pdfIn PDF document text
    • http://excellent-spb.ru/xuvemugilibemom3ay5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389085/normal_60163770d9004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450641/normal_5fe14ac4c9539.pdfIn PDF document text
    • http://tibetterrier.ru/livro_guia_completo_de_aromaterapiadtqdt.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/lab_report_19_enumeration_of_bacteria.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/sefiwegegagu/finokubosilid.pdfIn PDF document text
    • http://jilutuve.rf.gd/practice_exponential_functions_form_g_answer_key.pdfIn PDF document text
    • http://mijewuwusos.epizy.com/lidoxeraxofaxumil.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/making_a_will_scotland_template.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/virapavogez.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/36226558667.pdfIn PDF document text
    • http://rivejekab.epizy.com/99090584148.pdfIn PDF document text
    • http://zewogukanonudut.epizy.com/12960057767.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_off0000db34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 4900 bytes
SHA-256: 7c260da1fb3ab05a22a1defec467b0896cbce8b3e409a69c04ec67532560ef81
font_01_sfnt_off0000ec0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0C 10032 bytes
SHA-256: a06fd71f3daabea940afc25ac7a9a2a4539452d3982d7404b57ac28bb8e771ad