Malicious PDF — malware analysis report

Static analysis result for SHA-256 3644b836a44ef638…

MALICIOUS

PDF

71.8 KB Created: 2021-02-24 17:23:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1f853d2b69a1b24ed383e6abcdcacccf SHA-1: 0bc9ac7de7b52ce6e9cd998e58019c8d5213240f SHA-256: 3644b836a44ef6387eff2df0c4db4790e445ec71d8f6ab11adb00326071922f7
126 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
  • 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://bologen.ru/wix?keyword=temperature+thermal+energy+and+heat+lesson+quiz+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370996/normal_60220e6865ddd.pdfIn PDF document text
    • http://tokio-2020.fun/58791658514u4wkp.pdfIn PDF document text
    • http://pojezer.iblogger.org/dixazigit.pdfIn PDF document text
    • http://instapriz365.online/boxinofatojamiridufaxun64bwp.pdfIn PDF document text
    • https://zivotawab.weebly.com/uploads/1/3/4/5/134576919/88fa75930e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5fd6a00cb7c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454966/normal_6020d3f11eadc.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/what_is_grounded_theory_analysis_in_qualitative_research.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475397/normal_5ff4c2f1c1aaa.pdfIn PDF document text
    • http://pimebujeben.66ghz.com/how_to_change_transmission_fluid_mazda_3.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/charter_remote_setup_new_tv.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/what_is_the_best_food_to_store_for_survivalr705o.pdfIn PDF document text
    • http://jirafka.space/dining_chairs_for_sale_ikeajj76a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://repofifimi.epizy.com/health_food_guide_awards.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/quality_management_certification_for_nurses.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD93 5576 bytes
SHA-256: 88da2aa22ab23d6b81dbbf44a26bfc62265fe0a6c3395d5d566debee8391999e
font_01_sfnt_off0000e071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE071 10356 bytes
SHA-256: 3100a05cdf21bfea7da0d044f23794061a1d4502518f92b0444077902c94b878
font_02_sfnt_off000103af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361