Malicious PDF — malware analysis report

Static analysis result for SHA-256 35eb2142d03446bb…

MALICIOUS

PDF

71.1 KB Created: 2021-02-25 02:46:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 654a2f310cc0452e2ed255ac8f054173 SHA-1: fe298ce188beb0afccbb8bb545ad111e06420306 SHA-256: 35eb2142d03446bba71e2b63a41e311c903c28597530c38fec3f1c522618d317
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://baarspo.ru/wix?keyword=kumon+worksheets+pdf+kindergarten PDF link annotation
    • https://cdn.sqhk.co/xubuguxovim/icjexhi/company_of_heroes_2_ardennes_assault_cheat_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/0KhaTje/photo_mixer_app_free_download_for_android.pdfIn PDF document text
    • https://zigafofidonid.weebly.com/uploads/1/3/4/5/134508062/lolovorububa_punidup.pdfIn PDF document text
    • http://zozegakipuvi.iblogger.org/salario_policia_federal_df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425492/normal_6034e56e9d7a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490256/normal_5fd975709f872.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxegaxujifo/ejagehc/wukadafak.pdfIn PDF document text
    • https://rixotojar.weebly.com/uploads/1/3/0/9/130969533/ruvajagewemozapeso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457604/normal_600ae77adf491.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/gjeijgh/traffic_tour_mod_apk_download_android_1.pdfIn PDF document text
    • https://sizugive.weebly.com/uploads/1/3/5/9/135993047/57966.pdfIn PDF document text
    • https://masodorenos.weebly.com/uploads/1/3/0/9/130969057/7d9c64390a6.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/763980e8aaa83.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/HBWD0jg/ramusomugekam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vukujidor/xifitukibuzuru.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/logical_fallacy_identification_worksheet_answer_key.pdfIn PDF document text
    • http://buketoxepebaf.epizy.com/grupo_calo_formas_de_amor.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/92891633192.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/nerdy_nummies_cookbook_free_online.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_off0000d85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85B 5548 bytes
SHA-256: cb47e1787bd4a62b31cb2a29b2d242741991d99b448d5f5a78f6ae7aaa9bb2ae
font_01_sfnt_off0000eb24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB24 10488 bytes
SHA-256: be7a5f76de03b0fdbbfdb3cc1f2c9abb5d96548a0712504d270a9e92229ff62b