Malicious PDF — malware analysis report

Static analysis result for SHA-256 f073e339bbcdac8f…

MALICIOUS

PDF

80.2 KB Created: 2021-02-08 09:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 13ca077362f38c526ca5ee06a35917ef SHA-1: a45f1ff013b2e3a96afa174473dccc92b7c33c3e SHA-256: f073e339bbcdac8fb3717b8f92cae23acc52cb5bf7e50863e70ed4ff90fe8da0
184 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
  • 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/wb?keyword=reporting%20interquartile%20range%20apa In PDF document text
    • http://ita-bio.space/edge_lighting_rounded_corner_pro_apkhwq1m.pdfIn PDF document text
    • http://aycotoro0.xyz/zentangle_blank_templatesclf8n.pdfIn PDF document text
    • http://pixelbarista.com/need_for_speed_no_limits_apk_obb_download1d7sd.pdfIn PDF document text
    • http://zepofevof.22web.org/riven_strategy_guide_destiny_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460066/normal_6005d7332905a.pdfIn PDF document text
    • http://xeeewq.xyz/zadekebirofpk2o.pdfIn PDF document text
    • http://tur8osale.site/knjige_u_formatu_na_srpskom_downbzi1p.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/aromatic_compounds_mcqsncqzi.pdfIn PDF document text
    • http://hristogrigorov.com/toca_boca_games_free_download_android294d3.pdfIn PDF document text
    • http://effektzhizni.ru/710194692057mn65.pdfIn PDF document text
    • http://sodahq.pro/xcom_2_ranger_buildr2cfb.pdfIn PDF document text
    • http://gramnews.xyz/word_blitz_facebook_cheatsgatl2.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/tokudapele/dikedume.pdfIn PDF document text
    • http://jilabof.epizy.com/pew_charitable_trusts_grant_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/wilexusapajazubiwanol.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_off0000fb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 4944 bytes
SHA-256: 1117afc52b340400e525b0a4e0650e529d8b0287d5a60e031518324f7776d21b
font_01_sfnt_off00010c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3C 11668 bytes
SHA-256: 6482879552343c33f1d3adfb195f0c84810939f1785079c77893a4311ed32641