Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a449ebb0832528…

MALICIOUS

PDF

64.4 KB Created: 2021-02-13 19:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: eecf5ddfbb0205e08d567d4a1b4dd35e SHA-1: 4d7ab8dd3a1c417a65dfa267334f4fb3b72bd913 SHA-256: 43a449ebb0832528fcc1e827a93c9ba14f48c8c0b4e2614e7dca5a4140206880
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=algebra+1+volume+2+page+687+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366956/normal_600e47f08a708.pdfIn PDF document text
    • http://mscredit.info/bts_wings_album_zip_deviantartyvctn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527237/normal_5fdbe32a62473.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491934/normal_601f1946cfee2.pdfIn PDF document text
    • http://fotonagosuslugi-01.space/butatazusosesepulevexav7z9el.pdfIn PDF document text
    • http://onlinekartiadesi.com/artificial_intelligence_and_neural_networks_bookfgkz1.pdfIn PDF document text
    • http://tesocoin.online/besuzifefeodvvb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389830/normal_5fe1183e7bd98.pdfIn PDF document text
    • http://maska-respirator.shop/world_s_unbelievable_battlenw2pg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374372/normal_6004938c3ae3a.pdfIn PDF document text
    • http://servempieza.site/treatment_manual_for_anorexia_nervosai9tr7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476757/normal_5fce7dab4cad4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475863/normal_5ff60b73dcf27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_602107a203b14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379240/normal_5ffb2fc31ea98.pdfIn PDF document text
    • http://teenagetutor.net/bach_cantata_20866zqd.pdfIn PDF document text
    • http://noxesim.iblogger.org/57345971716.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gamupuzif.epizy.com/berezifo.pdfIn PDF document text
    • http://kewumexor.epizy.com/79589966141.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_off0000be75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE75 6032 bytes
SHA-256: e15421266b7ecb41718dd0e0c36c9391fd17470bd581feb11ca1a3c95cfe6ec1
font_01_sfnt_off0000d309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD309 9828 bytes
SHA-256: 35e6a6503c8eaf70f35c5a85020b9b8f68a9d63d3c9e154194aa3f33619b8f3e