Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ddbcf5f83d57fa…

MALICIOUS

PDF

115.6 KB Created: 2021-04-02 02:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 12b63fe7cab0702e98eecc3abcb23812 SHA-1: bccaf187234d5f99eb6916fa8f297ed948d942e3 SHA-256: 02ddbcf5f83d57fa6d724867b800a13047395540972664dd650b1c07063b5781
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic to distribute malicious content through a large number of links. The primary malicious URL identified is https://seumenha.ru/strik, suggesting a phishing or malware distribution attempt.

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://seumenha.ru/strik?utm_term=business+communication+now+4th+edition+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/xaduwudixum/rhcjeMW/all_checked_checklist_shopping_list_to-_do_list.pdfIn PDF document text
    • http://xadivoluzesop.iblogger.org/concepto_de_administracion_publica_y_privada.pdfIn PDF document text
    • https://cdn.sqhk.co/nonebizi/itlm9jH/alicia_keys_video_songs.pdfIn PDF document text
    • https://burodepizojeke.weebly.com/uploads/1/3/2/6/132696233/1507689.pdfIn PDF document text
    • http://sportplays.ru/eternal_rogue_guidescrb9.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/jJuRdid/cross_stitching_supplies_online.pdfIn PDF document text
    • http://vipmanmarket.space/how_to_apply_to_decorate_the_white_house_for_christmas_2020qssbf.pdfIn PDF document text
    • http://thedefenseforge.com/maranenotofoximamosofiezgm.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/fw5Ujab/62814179700.pdfIn PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/1714469.pdfIn PDF document text
    • http://nikaold.site/luzixupojifeqyvol.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/kufazete/79851828751.pdfIn PDF document text
    • http://kofuzedu.epizy.com/firumonaxisiladaloxiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4404950-8f48-492e-b483-f7c658370f72/lateral_thinking_activities.pdfIn PDF document text
    • http://kurejaj.epizy.com/audit_report_format_for_provisional_balance_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda5247d-4137-4b36-a1c9-8a64fb7200d7/zuzubofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7153007f-25e6-4989-8b57-907ba191ce6b/mecanica_contable_de_los_costos_estandar.pdfIn PDF document text
    • http://sapidobilebag.epizy.com/life_skills_goal_setting_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/wojevoxinagaposo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18838 5624 bytes
SHA-256: 1cf3e4318cedac4870cd489d5f04cc4d99c950d28aaa2e1099f08ce8135186a1
font_01_sfnt_off00019b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B45 11004 bytes
SHA-256: 4da8a5de11914234c8db787001d6eafca2e828c20539cc31a22a1af8aaa382d2

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