Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61d5fbcd4750ac4…

MALICIOUS

PDF

78.1 KB Created: 2021-01-31 23:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 77a0cc45b68aa224b7c040957cb57859 SHA-1: 775031440cfe664289cf11d0cdeea1a182e1c52b SHA-256: e61d5fbcd4750ac463e761ab782875b919b70b67c338d14ba94c4a2cc72ded89
166 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://baarspo.ru/123?utm_term=docker+certification+book+pdf PDF link annotation
    • http://tuworiki.22web.org/mybrd_mobile_aplicatie.pdfIn PDF document text
    • http://menajaf.iblogger.org/sidupazej.pdfIn PDF document text
    • https://bokowamimufap.weebly.com/uploads/1/3/2/7/132712050/badafd.pdfIn PDF document text
    • http://xujilutobidiko.iblogger.org/ageing_report_european_commission_2018.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/pelivixorovuvo-xudexuzoz-mumolas-wudito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408321/normal_60130a6f3989e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486758/normal_6013942fc6a49.pdfIn PDF document text
    • http://davavemoj.66ghz.com/ayyappan_baby_songs_tamil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417526/normal_5ffc94dd27bf2.pdfIn PDF document text
    • http://egrn-order.online/piada_de_ary_toledo_como_ou_elefantet56au.pdfIn PDF document text
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/rivafidajoturulibege.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dezezefisimel.rf.gd/type_1_diabetes_insulin_treatment_guidelines.pdfIn PDF document text
    • http://lanikudawojag.rf.gd/dihybrid_cross_cheat_sheet.pdfIn PDF document text
    • http://baromar.epizy.com/israel_agriculture_technology.pdfIn PDF document text
    • http://kefujaforu.rf.gd/cdfm_exam_study_guide.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_off0000f3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E6 5144 bytes
SHA-256: 17cbb860b61e140eb9ab2ebcef889d59b8fa65bb2646ab2d07bb69d2f05d1703
font_01_sfnt_off0001057a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057A 11168 bytes
SHA-256: e2eb8f24d00f9c5b112a2d71ed866087b2e80be8cb6da8ec4de149cde0e9b710