Malicious PDF — malware analysis report

Static analysis result for SHA-256 b831d3241246cb4e…

MALICIOUS

PDF

71.7 KB Created: 2021-02-14 00:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c7737bb396a72c38ffe1808ee4c4dff2 SHA-1: b691ac449e1f4d633f865502676c9d9a62e46525 SHA-256: b831d3241246cb4e4613000ce5f10373af302823d62f8ce91a4b3d2a62337629
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=harry+potter+e+la+pietra+filosofale+pdf PDF link annotation
    • http://mangalvpodarok.ru/423535180335jvlq.pdfIn PDF document text
    • https://gakafapokizi.weebly.com/uploads/1/3/5/3/135319358/5411846.pdfIn PDF document text
    • https://zaluzukefajol.weebly.com/uploads/1/3/5/4/135400247/c55afcf1274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454824/normal_5fe6864d5753f.pdfIn PDF document text
    • https://cdn.sqhk.co/zufosupiz/IagcggH/40654432712.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412195/normal_5ff87eb928ebb.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/lhhohiK/80429760203.pdfIn PDF document text
    • http://newsportstechnology.ru/5110524019753tht.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_602188e835cfd.pdfIn PDF document text
    • http://aarbuz.space/728362807098i60d.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/F3ieHib/gijakoguwaboref.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380214/normal_5fd135fd18fcf.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/hjgd9di/amazon_marketplace_canada_phone_number_customer_service.pdfIn PDF document text
    • http://vseti.life/android_google_assistant_turn_offftois.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/iagjiiE/campus_parent_spps.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_off0000da2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2D 5100 bytes
SHA-256: 5937bc9fd3954bff5595a4fc0cf8ba49348fc14a046f7f0a79e5f270ea38c3f0
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 11856 bytes
SHA-256: c2c32cb11d711e43fa150b52416e80c2ca9512963333dc90e2293b5bff9cda88