Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd85cc951c385fb…

MALICIOUS

PDF

70.2 KB Created: 2021-02-08 12:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a8c284c7b65baac9018b9fac635838f0 SHA-1: a690d75f5e9131aaac404fe0d3b958c9e914aaa4 SHA-256: abd85cc951c385fb87c629fef804c0891c666ad85aa072cc62f4b3ccdc9652a9
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wb?keyword=bluestacks%20latest%20version%2064%20bit In PDF document text
    • https://cdn.sqhk.co/mixubiki/RheGcgc/22506193812.pdfIn PDF document text
    • http://rocketdocs.us/biografia_de_alessandro_voltaknuyv.pdfIn PDF document text
    • https://cdn.sqhk.co/vufebevefo/bGUcWTB/derigonenazuditavumetuzad.pdfIn PDF document text
    • https://cdn.sqhk.co/fomanazoravu/W65heHD/fomativimaz.pdfIn PDF document text
    • http://verifiedbadges-form.com/las_siete_leyes_espirituales_del_exito_libro_completow20tu.pdfIn PDF document text
    • http://vivadoctor.ru/o_ceticismo_da_frvfpa.pdfIn PDF document text
    • http://relax35.ru/sisterhood_everlasting127a4.pdfIn PDF document text
    • http://questotzvezd.space/dementia_stagesv5aws.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408186/normal_5ff0908d8679e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_601f7023e9bd0.pdfIn PDF document text
    • http://hurricane1.space/saeco_talea_giro_plus_service_manual59ipz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zofekaxezujujom.rf.gd/abrsm_piano_grade_8_scales.pdfIn PDF document text
    • http://joretewad.epizy.com/tigasup.pdfIn PDF document text
    • http://jiboleramar.epizy.com/autopsy_full_movie.pdfIn PDF document text
    • http://xoxozuzupa.rf.gd/nosokom.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_off0000d513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD513 5348 bytes
SHA-256: fda53dc0d98cdc1887dcafb8ec7415acc4eb8740c64c6d32c9d6e783e2229a0b
font_01_sfnt_off0000e764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE764 10812 bytes
SHA-256: 6775b9c176328a43ee923958d3ac579a4da6eb9eb9ce67e5b5ef00b25726826f