Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e56c308cecf9a9c…

MALICIOUS

PDF

74.6 KB Created: 2021-01-25 21:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 584b6c7d6787aa4c6ec70ab03d17ce86 SHA-1: 21ee13aaf8253bbc48751205c86a55f7ae3a5b4e SHA-256: 3e56c308cecf9a9c47e3369fd429e00919c7a8175ced0aa7f0234fbbe6744803
126 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
  • 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/wb?keyword=image%20editor%20mac%20os%20x PDF link annotation
    • https://cdn.sqhk.co/remimidotomi/j8Fiarq/10733791941.pdfIn PDF document text
    • https://cdn.sqhk.co/wukiratuxazo/wMkWjgn/hashtags_for_likes_for_instagram.pdfIn PDF document text
    • https://cdn.sqhk.co/soredepel/gehVjb8/wujovuw.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/zPgjT2O/depabiwewafufazunaxos.pdfIn PDF document text
    • http://tumexade.22web.org/ba_1st_year_book_in_kannada.pdfIn PDF document text
    • https://cdn.sqhk.co/vozaxodep/iicjhYe/sexedogalujizil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386851/normal_5fcbcb6f8287d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413567/normal_5fe53046352a3.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/EmBBWgi/rabajuvowowitomavufumerak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448731/normal_5fd37975ca961.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/varoximu/create_lightning_email_template_folder.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/insulin_therapy_guidelines_for_gestational_diabetes.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/gaming_logo_design_template_free.pdfIn PDF document text
    • http://bomemab.epizy.com/heart_disease_project.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/sujabafixaxobavetofazi.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/alexa_skills_kit_sdk.pdfIn PDF document text
    • http://tubujaj.epizy.com/best_arcade_adventure_games_for_android.pdfIn PDF document text
    • http://kixurazo.rf.gd/solving_quadratics_practice_worksheet.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_off0000e975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE975 5232 bytes
SHA-256: 31e8b8ef11b7114f2a9a1bcdeae0a608102417cde4c55531f84757defb43f46b
font_01_sfnt_off0000fb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2C 10064 bytes
SHA-256: 7e6f031a60b00f56f4b7722a8e66e0fd694ff2a31e616f34a08b6eb367bd3207