Malicious PDF — malware analysis report

Static analysis result for SHA-256 0273a301c9da4e16…

MALICIOUS

PDF

74.0 KB Created: 2021-02-22 08:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 4ebdcf72dad44f3d730742b235bed2a0 SHA-1: 24917db12b77c8464b4e95a00f46af0c6594b27d SHA-256: 0273a301c9da4e164d3b28464d07fad285dcab05f0aecf54ecba1ca8efa61fab
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely a phishing site. The PDF structure and embedded content suggest it's designed to trick users into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wix?keyword=characteristics+of+quadratic+functions+worksheet PDF link annotation
    • http://azakalaza3.xyz/sekebizenikaditivexukogwz9qf.pdfIn PDF document text
    • http://metazoaapc.fun/best_hill_country_road_tripmphqw.pdfIn PDF document text
    • https://cdn.sqhk.co/fokudiwun/hSeLjbG/sculpt_models_download.pdfIn PDF document text
    • http://iblack.space/15054827512f5vte.pdfIn PDF document text
    • http://kutufirix.iblogger.org/affidavit_format_for_ccl.pdfIn PDF document text
    • http://detonic-deutschland.website/qualified_dividends_tax_computation_worksheette5jy.pdfIn PDF document text
    • http://muxonobugimaki.22web.org/4509336175.pdfIn PDF document text
    • http://xawinuvazok.iblogger.org/anatomy_and_physiology_coloring_workbook_chapter_3_at_the_clinic_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/0ijicMa/rally_championship_1996_game_download_completo.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/zupenafud/nojenobafibide.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/kawifuravodobiponidolazi.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/primary_gyratory_crushers.pdfIn PDF document text
    • http://lusiromipu.epizy.com/formacion_del_ateroma.pdfIn PDF document text
    • http://xinuxupenaze.epizy.com/lovodemiramar.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/google_play_store_games_free_app.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/another_world_one_direction_song.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/beautiful_images_of_babies.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/vogeda.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_off0000e526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE526 5264 bytes
SHA-256: ba7d76f6b9aadc421ee9eece8cb7e3dad4723a9cad2be71e6a86dd8af558b7ea
font_01_sfnt_off0000f70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70F 10376 bytes
SHA-256: 05ebf51a6465cbe6d86eaddd12cd91d2d30ae6ed3d3629e85d9d91d5f6abfa49

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