Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1deb02f1134b82…

MALICIOUS

PDF

71.3 KB Created: 2021-03-08 19:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b48f81878ff45e4fffa077672a578599 SHA-1: 4408ace79a9acc8ba64e65ffce68833fb496d9c2 SHA-256: 7d1deb02f1134b8202ba83b0073a6c60d2aecbd514a7f48e18b72308c299f624
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that mimics a search result for 'dnd character sheet google docs', likely a phishing or social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kuzutuzo.ru/wb?keyword=dnd%20character%20sheet%20google%20docs PDF link annotation
    • http://towufato.mywebcommunity.org/minn_kota_ultrex_trolling_motor_price.pdfIn PDF document text
    • https://cdn.sqhk.co/loxusovi/ibihcMQ/water_pipe_prices_south_africa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427080/normal_6018a6a0007e0.pdfIn PDF document text
    • http://monetobo.iblogger.org/99631639980.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420037/normal_600ed2fe70c68.pdfIn PDF document text
    • http://jabudapitu.scienceontheweb.net/jee_main_2016_india_result.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/hbhcjgk/gonazujazizunumovokave.pdfIn PDF document text
    • http://kavesowotefa.iblogger.org/how_to_reset_the_service_engine_soon_light_on_a_2001_chevy_silverado.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420747/normal_5fcba5b62965e.pdfIn PDF document text
    • http://fopekoriw.sportsontheweb.net/sogunibasugipivi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425921/normal_5fce66c8e55db.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/why_is_my_zanussi_tumble_dryer_not_heating_up.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xenamijexutagus.epizy.com/doragebosusosowapakegel.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/scenario_type_interview_questions_and_answers.pdfIn PDF document text
    • http://waxobib.rf.gd/19733154538.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/tanatologa_libros.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/fallen_lauren_kate_blurb.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/74882971243.pdfIn PDF document text
    • http://wawaxujogoned.rf.gd/lateritufojarineruzosat.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/lagu_aku_menunggumu_peterpan.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/97820795191.pdfIn PDF document text
    • http://wexiwukivenuxaf.rf.gd/rojadojarexedelul.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_off0000d16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16D 5200 bytes
SHA-256: c194f42e53f1a1bd1e7c9532e74a956cd90898c76f4ea1c929b7b3206ea0392c
font_01_sfnt_off0000e318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE318 13952 bytes
SHA-256: 917dbb0be1ebb745cc7f15f51b7d316d102b138e64ae28ee2d43e061ec4750da

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