Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9f1363390ec466…

MALICIOUS

PDF

70.9 KB Created: 2021-01-16 21:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ec423c07739896cead938916ab8ea934 SHA-1: 96d3a5ea033250ba5a4a275d063b265a7a52997b SHA-256: 3b9f1363390ec46693e2cb6f5f93c54a6327254969ce48c53120d5e5ccbaa8be
126 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
  • 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://traffnew.ru/aws?utm_term=antigona+velez+pdf+completo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408583/normal_5fe859244e633.pdfIn PDF document text
    • https://nofefikow.weebly.com/uploads/1/3/4/5/134510094/dolipuzetomipo.pdfIn PDF document text
    • https://site-1174866.mozfiles.com/files/1174866/newijosizeveza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5fd636689f479.pdfIn PDF document text
    • https://lagafuxomip.weebly.com/uploads/1/3/4/3/134347440/8731064.pdfIn PDF document text
    • https://site-1172565.mozfiles.com/files/1172565/grade_2_math_games_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5f9d93c89b7ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444623/normal_5fb4667958659.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496193/normal_5fdd423057593.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407986/normal_5fefd0dd675b5.pdfIn PDF document text
    • https://site-1172732.mozfiles.com/files/1172732/golden_star_theaters_country_club_mall.pdfIn PDF document text
    • https://site-1214984.mozfiles.com/files/1214984/ableton_live_lite_9_manuale_italiano.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382629/normal_5fa02029ee061.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/waxapoz/63548695027.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/assetto_corsa_xbox_one_code.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_off0000d868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD868 5300 bytes
SHA-256: e66c5e258b5082525d3865548ba7c1b2abb01307101a2eaf7c1399219d3602be
font_01_sfnt_off0000ea7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7C 10952 bytes
SHA-256: f67aa4fd127884e5abf0acec3112e20dbe765ae7cb352dd20c4716af55ead5da