Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1ac98c9d6e8b03…

MALICIOUS

PDF

65.8 KB Created: 2021-02-25 00:05:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a78504ab84b55111d6c96b1375ffd0de SHA-1: db797dcfb1105acc65b718fe2838a70482fc4761 SHA-256: 6b1ac98c9d6e8b03f0f42dacaee9bd3418dbf03d02375ceb4a255c08d4e8fa5e
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://maypoin.ru/123?utm_term=two+step+inequalities+worksheet+i+love+math+answers PDF link annotation
    • http://domen3.club/instructions_on_how_to_play_balderdashzd0i0.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/qvrgjf2/gotezaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_5fd11ea225255.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/setting_citizen_blue_angels_watch.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/norcold_refrigerator_replacement_chart.pdfIn PDF document text
    • http://trylait.pro/67823998199wbhly.pdfIn PDF document text
    • http://komarovskii.xyz/voot_colours_tv_show23kw1.pdfIn PDF document text
    • http://mafuditovu.iblogger.org/employment_intermediary_report_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403429/normal_5fe666002ec06.pdfIn PDF document text
    • http://shoppermarket.online/c_report_viewer_dllqv3t7.pdfIn PDF document text
    • http://lg-copyright.com/17181146021fhvns.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/bosch_glm_15.pdfIn PDF document text
    • http://ca-management.website/rekatiboralizuzefojemolpgdit.pdfIn PDF document text
    • http://tehnikator.ru/86421338591mmosb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485711/normal_602e6122b1c35.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_off0000c75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75F 5348 bytes
SHA-256: cf1abbd521abed65e52f9a1a2a3cb5ba3c8231087ac39cfc88559d1c546518f4
font_01_sfnt_off0000d980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD980 9560 bytes
SHA-256: be3f25bb23ffa18b52f7360bfd41820cb528d97491e8c272d95d55a47489b1e3