Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e345dc2532204a…

MALICIOUS

PDF

70.5 KB Created: 2021-02-27 07:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3e01631f475cff88a5706a47b957ace3 SHA-1: df4b861d3af67415f7b93b432e9e3b8f0f60b7e5 SHA-256: 57e345dc2532204a21021a14e6fb032706a7a698fb234a70cf9b0fd3b12a97d4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=types+of+tactical+flashlights In PDF document text
    • https://s3.amazonaws.com/lomogas/41473300712.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366978/normal_5ffa986d366ce.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/XijhaFe/24827025001.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/86406866417.pdfIn PDF document text
    • https://cdn.sqhk.co/zerumowo/jhmg703/91910335859.pdfIn PDF document text
    • http://sodamasagu.66ghz.com/vejiguwinor.pdfIn PDF document text
    • https://cdn.sqhk.co/kosadara/jfhiyjd/star_trek_starfleet_command_pc_trainer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369632/normal_5fc7e48884dd9.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/sowesufamijug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://likasiz.epizy.com/advance_payment_receipt_format_in_word.pdfIn PDF document text
    • http://jijabivu.epizy.com/acca_f5_exam_kit_free.pdfIn PDF document text
    • http://vakutasuv.epizy.com/commercialization_strategy_template.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/what_does_the_bible_say_about_jobs_wife.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/n2_3h2_2nh3_redox_reaction.pdfIn PDF document text
    • http://puwagof.rf.gd/improving_communication_skills_worksheets.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/los_juegos_del_hambre_libro_1_paginas.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_off0000d7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D6 5232 bytes
SHA-256: 697429ffe0c82196a3095aaf67c53d4c4d963e687ea0ea67d731af4e0844808b
font_01_sfnt_off0000e9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B3 10364 bytes
SHA-256: 23f8ade8233b2e70246391c6313e6b0e84790f44576da0a19716f142ff92e967