Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d265f884807f4b…

MALICIOUS

PDF

74.8 KB Created: 2021-05-11 01:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e56fcb43e5722b7a75b7dab8c7bd3287 SHA-1: 2116a72b9d001d86b5f6ef8ae1f7b0478380ed3b SHA-256: 28d265f884807f4b7ec986e874f7e2864a669d7b2462211271bd412dd865db3f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, aiming to trick the user into visiting a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the document's deceptive content point to a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/strik?utm_term=how+long+should+i+cook+jerky+in+a+dehydrator PDF link annotation
    • https://cdn.sqhk.co/kojupiloxifi/idFhbgh/28315108918.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/6KS8Wie/printed_canvas_cross_stitch_kits.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/jcjcgc4/xadikudomobitibigibo.pdfIn PDF document text
    • https://cdn.sqhk.co/nemoludajedu/XgegdSb/90574507475.pdfIn PDF document text
    • http://kijekidajefi.getenjoyment.net/metera.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/Ngdibgc/simple_doubly_linked_list_program_in_c.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/gXI0Sie/ticket_to_ride_europe_max_score.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/mfUhhjd/loligiga.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Gijjhq7/vepoxonojimugapotap.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/nagev/69072331626.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/mettler_toledo_safeline_metal_detector_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/zudulivunix.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/diweveja.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/autogenes_training_formeln_gegen_schlafstrungen.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/calculations_using_significant_figures_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/equifax_credit_report_application.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/how_to_use_a_dryer_lint_trap_brush.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/tosujapaga.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_off0000e6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A9 5496 bytes
SHA-256: 6792a00d35b7f66fa385ec9e64d623531fb47b156a7a937f845986277acc5cc2
font_01_sfnt_off0000f96e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96E 10680 bytes
SHA-256: 4afdb39028eaf1997408b5e7f717f777f9936f0559faed520ba9fb20dfc3d9f0

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