Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d15ab70de08f2d8…

MALICIOUS

PDF

73.2 KB Created: 2021-02-10 10:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c3c36947e1ab9f3a5b92c7422ab5131e SHA-1: d53254b8dc03af86ecfdff78b4d22bc6887b8905 SHA-256: 1d15ab70de08f2d8ba3a9cec4aa682d073eb85b87bc05b479496dc81d85f4e86
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=google%20play%20games%20services%20apk PDF link annotation
    • https://dusitibepilezu.weebly.com/uploads/1/3/1/4/131437978/fubimovimafupew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498324/normal_5fd9fd5ba154b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_5fe9d12fe434e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369657/normal_600890c9bfbb0.pdfIn PDF document text
    • http://mandarins.space/pacific_energy_fireplace_insert_partswzv9y.pdfIn PDF document text
    • http://dudipoviju.22web.org/zuretibipatunajopuboxodu.pdfIn PDF document text
    • https://gakafapokizi.weebly.com/uploads/1/3/5/3/135319358/dogevopafuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480585/normal_5ff355e97a58c.pdfIn PDF document text
    • https://votivugaxowo.weebly.com/uploads/1/3/1/1/131163932/geparijatul.pdfIn PDF document text
    • https://bokasopuvozanib.weebly.com/uploads/1/3/4/3/134319525/tiretoxu-xevebogipugu-tegugewefobesaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5fd274614856b.pdfIn PDF document text
    • https://cdn.sqhk.co/miburixegapu/7k6idEY/88879254179.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bikikifuxax.epizy.com/wiwijufuwe.pdfIn PDF document text
    • http://vinetewexe.epizy.com/common_core_math_book_9th_grade_answers.pdfIn PDF document text
    • http://netupizorazez.rf.gd/20899534703.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_off0000e139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE139 5508 bytes
SHA-256: e53746f4f9b7cdd349d0bb0793e3bbb8dc8cf717d0b2aa7cfaa604b7b811ddd3
font_01_sfnt_off0000f3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FC 10644 bytes
SHA-256: dc025893957e88d03dbe350aff2877078bbf87409a841a56a39674a4ffab3845