Malicious PDF — malware analysis report

Static analysis result for SHA-256 4996f9f09644a4d9…

MALICIOUS

PDF

72.6 KB Created: 2021-03-09 18:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9850ac44af46506d69d850dfac3daad8 SHA-1: 984466ea2c3e497c8af27f0d38ee7e06fbd35927 SHA-256: 4996f9f09644a4d91b2237e6d041454f0be56fc961f67129ed1736916a06481d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=miller+and+levine+biology+online+textbook+chapter+7 PDF link annotation
    • http://sewonmedix.ru/how_to_be_a_certified_data_analystup2ua.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/star_map_orion_constellation.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/fef5e4491.pdfIn PDF document text
    • https://zawivipesanupi.weebly.com/uploads/1/3/4/7/134724715/8d3acc8867b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5fe78a1c00444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421959/normal_604473517fd25.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/english_talking_courses_online_freevy0xj.pdfIn PDF document text
    • http://abwaab.su/the_last_rung_on_the_ladderfbyj6.pdfIn PDF document text
    • http://pifowovumuwe.medianewsonline.com/vesigawivo.pdfIn PDF document text
    • https://fuzedefona.weebly.com/uploads/1/3/4/5/134578490/xixoxa-nidazalininiv-fejokin-vumonit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413017/normal_5ff70ce1a805e.pdfIn PDF document text
    • http://ionatr.space/94053378178655af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421960/normal_6041f0b2c04a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafodix.myartsonline.com/how_to_include_public_speaking_on_resume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c78f70-8aad-4fa4-9a67-5a77209c4fee/98114982457.pdfIn PDF document text
    • http://nanefelizili.epizy.com/71163683414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4358bef9-c44f-499c-a264-7786baf4b2cd/10020972946.pdfIn PDF document text
    • http://pugagewuda.rf.gd/is_applied_calculus_the_same_as_calculus.pdfIn PDF document text
    • http://gaditimotef.rf.gd/68594442069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e05037-dd70-4dfb-8015-ed53352008f5/line_6_spider_jam_75w_manual.pdfIn PDF document text
    • http://sexikiti.epizy.com/velikomajefokomarirafo.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_off0000de6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6D 5676 bytes
SHA-256: 7472ad9e0bc8a2af5927ff6c3db453cc0ec66a722879537e904023e27a55f1d2
font_01_sfnt_off0000f1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DD 10096 bytes
SHA-256: bf75d8e67ddbabb4c24ab1b8543fd87f77f57d186ff351eb72ff385ff0ffbe9b

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