Malicious PDF — malware analysis report

Static analysis result for SHA-256 be91319eacb4bd68…

MALICIOUS

PDF

67.3 KB Created: 2021-02-02 19:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f9b642a4c6283e1cda13a3ee036b831f SHA-1: dc73a4edae575b37170f4cc9ecbee9e9035bcd41 SHA-256: be91319eacb4bd687ec3fe8ee9fea51f6b787cec395b8d898766bc547b8383ca
186 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wb?keyword=independent%20events%20worksheet%20tes PDF link annotation
    • http://iceteas.space/155978181743ib3e.pdfIn PDF document text
    • https://cdn.sqhk.co/kepilujofeje/jgeqaPM/anime_hero_2_evolution.pdfIn PDF document text
    • https://cdn.sqhk.co/xugosovemi/fviiBxY/u_mobile_app_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/Uhagjhj/buxepizoruvujekobusepeg.pdfIn PDF document text
    • http://olx-delivery.cc/gibazupt5146.pdfIn PDF document text
    • https://cdn.sqhk.co/fazejitev/Pljihcg/march_assist_app.pdfIn PDF document text
    • http://fbdirect.site/balomiralaxegoxiroppltqa.pdfIn PDF document text
    • http://weareanonymous.org/gebojapa1qxpm.pdfIn PDF document text
    • http://astropsychology.site/android_billing_library_tutorial3net6.pdfIn PDF document text
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/2496577.pdfIn PDF document text
    • http://cardioactiveuficiale.site/vadofurajunuwakovujatca74.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/fgjTjil/seashine_adventures_cabo_san_lucas.pdfIn PDF document text
    • http://insurancesouk.com/55826131818fvt03.pdfIn PDF document text
    • http://tells.fun/meepo_city_rider_2_for_sale7nw7a.pdfIn PDF document text
    • http://citimart.online/rakaxatokaninoxisaxegx6hl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE1 4960 bytes
SHA-256: c3a50b31aa277234d4c5d85f1066488e551e02ccace3ce15f028762647b1cc9b
font_01_sfnt_off0000dbd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD3 10736 bytes
SHA-256: 9e4472c928417dcb0519bd9caf52d41662b43f4b504239bbf2a9588acdab4b36