Malicious PDF — malware analysis report

Static analysis result for SHA-256 829d95d543cbcbae…

MALICIOUS

PDF

77.9 KB Created: 2021-02-19 03:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: be0f991531ee71e839dba5983b821e03 SHA-1: 9ef74c117dd4698fcb5618388734eb36f5405c0a SHA-256: 829d95d543cbcbae903cd3a54b6e9184b802552748b7b606c8f360039fbb9214
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://bologen.ru/123?utm_term=what+are+some+idolatrous+symbols+popular+in+our+culture PDF link annotation
    • https://cdn.sqhk.co/xipepovivik/iaViehe/39992891052.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/GhbifeI/warotesopikiwali.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/gjjfQZu/kunai_throwing_knives_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/qZgwial/amazon_seller_central_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/SKgfUbL/paradise_island_show_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424378/normal_6025bc7930f9a.pdfIn PDF document text
    • http://mestorating.ru/naxuw4hsa3.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/9gfhjrN/amazon_acrylic_nail_art_kit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410194/normal_5ff7ba3bbc443.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473638/normal_5ffd7da3e2f0e.pdfIn PDF document text
    • http://drilltech.info/wukawufaxegiwus4yk1u.pdfIn PDF document text
    • http://proba7.xyz/64371040835pysyu.pdfIn PDF document text
    • http://usene.xyz/anonytun_app_freen7uqd.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/ibjaUzf/fagav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_60245c6facf43.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/jbiejb4/77026094907.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444100/normal_5fecbe1e89b50.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofadezowudekeg.epizy.com/chamakam_telugu.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_off0000f434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF434 5568 bytes
SHA-256: 249aeab94dbea76c0459600ce0ed2bc37d852af6857750d88a8841af0d90929e
font_01_sfnt_off00010705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10705 10300 bytes
SHA-256: a90e06799873cc75094a956176d3e30f1054af504f3fe9ca34676ae97dcd82b1