Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d953aa9b2184b9…

MALICIOUS

PDF

71.8 KB Created: 2021-02-25 18:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2106c7da5420b978870f5a3137f70238 SHA-1: c9f2388def0628925da98784bf76ba0a70a33834 SHA-256: a9d953aa9b2184b906087ab359489cd6f8ff60429fcd75dff5e239a945fa292f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/award?keyword=xbox+360+code+d%2527erreur+03+57+00 PDF link annotation
    • http://7lessons.website/najaxakadapotifijogekekubzplcn.pdfIn PDF document text
    • https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/abc1d4f80a80.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/gogigukigutal.pdfIn PDF document text
    • https://cdn.sqhk.co/xewumoxu/idgeQgi/super_league_hack_mod_apk_download.pdfIn PDF document text
    • http://limecash.xyz/flow_study_urology3mo2n.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/cHghyjj/5916961945.pdfIn PDF document text
    • http://ozalupa.space/aac_file_format_viewerucuqu.pdfIn PDF document text
    • http://priz24.site/liberation_war_of_bangladesh_essay7grz2.pdfIn PDF document text
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/nugunimexowunib_guzugag_figajoloxukumuz.pdfIn PDF document text
    • http://tekplafond.xyz/statistical_methods_for_machine_learning_downloadvm49n.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/Hijhehd/big_ten_football_championship_game_tickets.pdfIn PDF document text
    • http://agentsoft.space/gw2_super_adventure_box_world_2_zone_11mj9c.pdfIn PDF document text
    • https://fatajoser.weebly.com/uploads/1/3/4/6/134655124/6364995.pdfIn PDF document text
    • http://milanbeachs.space/2563233786705m9s.pdfIn PDF document text
    • http://yourcy.com/nagaxegulojae9tgl.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/romazeloridi.pdfIn PDF document text
    • https://wemeguxenuvoj.weebly.com/uploads/1/3/3/9/133999449/dexuguki-sazijikugox-dexujogemabusid.pdfIn PDF document text
    • https://fufiwixafuwisu.weebly.com/uploads/1/3/4/7/134770326/botij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB87 5396 bytes
SHA-256: 6b5af4ddca0774c63fda32b9e598a0246a27e5e07374655a7b5d372fa39583ee
font_01_sfnt_off0000ee04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 10568 bytes
SHA-256: 067206c582e5d7ff18aa88c29c570fa60e3de7723af90fead39f6fb5f0ba2eff

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