Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca8f5bc02542236…

MALICIOUS

PDF

71.4 KB Created: 2021-02-10 16:13:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4828c71a1bc642a22ed17ceb1f5284bb SHA-1: 65539398db79be03989bb1bda3a78fcd6e9c862d SHA-256: 4ca8f5bc0254223661f4f41dc4adbff7478383b23f224768bcf474806b6efd4a
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://druttle.ru/wb?keyword=wondershare%20fotophire%20%20pc PDF link annotation
    • https://cdn.sqhk.co/xenumobavun/cgfgib6/tegero.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/jeVjahf/32690277911.pdfIn PDF document text
    • http://grinallex.shop/kosiwojarotajer.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/hjJ0ig7/96397415203.pdfIn PDF document text
    • http://sandiego-podcasts.com/poxoxasm449.pdfIn PDF document text
    • http://cookwellbakewell.com/minecraft_creeper_pumpkin_templatem47eg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492250/normal_600f4b607c589.pdfIn PDF document text
    • http://shop-onlinediscount.xyz/physics_ia_ideasu17i6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391326/normal_5ff099a135212.pdfIn PDF document text
    • https://cdn.sqhk.co/dalegoti/Wgigchb/42154749204.pdfIn PDF document text
    • http://skidki-day.site/faxavapadexakegexir8pwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496828/normal_5fe6c8a4c325e.pdfIn PDF document text
    • http://digitalcalakk1.xyz/4700912864955j0m.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/homgegd/xozadafavasetik.pdfIn PDF document text
    • http://tugrull.com/97683933686mozg3.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_off0000d9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F2 5224 bytes
SHA-256: 02e9a7c85142d8377fce5e3d737d10a6876d56f4d6d54fd521e1c4f81ad84b23
font_01_sfnt_off0000ebc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC5 10848 bytes
SHA-256: f1f0343a01d63960360c462a2e64cf34b2e6be63d3df6127f70804b158d2a279