Malicious PDF — malware analysis report

Static analysis result for SHA-256 374bd8a31b16a18e…

MALICIOUS

PDF

72.3 KB Created: 2021-02-04 21:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ffab14d98a3e473f54b6de346623b25e SHA-1: 652a0ece0cc3e6aa4597388b00e95dd217916fd7 SHA-256: 374bd8a31b16a18ec22abd3d6d1f97a2661fcb57c201e787078e0900be710d6e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=histogram%20template%20excel PDF link annotation
    • https://cdn.sqhk.co/kesufetumo/nUjjhbs/minecraft_survival_island_seeds_1._16._40.pdfIn PDF document text
    • https://masogivuxun.weebly.com/uploads/1/3/4/8/134887982/sasomivo.pdfIn PDF document text
    • http://vutazumadik.iblogger.org/cambio_climatico_resumen.pdfIn PDF document text
    • http://kzrovk.xyz/dejowonevuvokodufadull347.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/iasgeX8/download_game_frontline_fury_grand_shooter_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417670/normal_5fc793a53dc62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403406/normal_5fde5a0910982.pdfIn PDF document text
    • http://ultra0.space/nilumulin41eiy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418777/normal_6012b04e0cb26.pdfIn PDF document text
    • http://paksorond.xyz/luna_nueva_online_latinoo00mc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445555/normal_600becad07504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_5fd1635a8364b.pdfIn PDF document text
    • https://cdn.sqhk.co/kurinunuwor/Xgcjgnt/rick_freeman_group.pdfIn PDF document text
    • http://opticsystem.website/werapewxn9z6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nasujaguza.epizy.com/facebook_report_dead_person.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_off0000dee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE3 5280 bytes
SHA-256: a537d465cb1e3b1be3ab0060ed4bbaeab123aa8fe9a0c77679c4651472a22613
font_01_sfnt_off0000f0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C8 10472 bytes
SHA-256: 3ccdc4d17afcbb72632c1ab2a3493e9b4a38a5017dcc589a0cc38aec3f6b0151