Malicious PDF — malware analysis report

Static analysis result for SHA-256 404e24d5f415b60e…

MALICIOUS

PDF

68.7 KB Created: 2021-02-23 14:30:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 96b314e57d6db4a2270aad5557b5ae2b SHA-1: 2faf879ebc2adf16515c079cd70b104dfb727d15 SHA-256: 404e24d5f415b60e46cc099abd0822e20567283d4a57942f696596657d370401
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains a lure related to 'the shining carpet desktop wallpaper' and includes an external URI pointing to 'baarspo.ru'. Heuristics indicate a browser extension installation lure and ML classification strongly suggests maliciousness, consistent with a phishing or trojan delivery attempt. The ClamAV detection further supports this, identifying it as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wb?keyword=the%20shining%20carpet%20desktop%20wallpaper PDF link annotation
    • https://cdn.sqhk.co/jonuwezipagi/jUr7ib6/beta_300_rr_graphics_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/594rbfs/smithsonian_channel_air_disasters_imdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403808/normal_5ff8b57838950.pdfIn PDF document text
    • https://cdn.sqhk.co/zujarepifej/fhbqcfa/gun_shot_fire_war_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366351/normal_5fed9e0fbca97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423428/normal_5fe435ea70783.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/PaiccbC/giwavevibap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://misugivunuzu.epizy.com/descargar_commandos_2_para_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/template_mr_krabs_money_meme.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/kuriraxeluza.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/madame_bovary_1949_book.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/vovigasa.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/19836497855.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/terraria_grappling_hook_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/jesodom.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/52937520238.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_off0000cd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7E 5440 bytes
SHA-256: 28b2ccb51e084ef6e5686776dddaea84df7cdd95d25be93a1e1efcee96ced235
font_01_sfnt_off0000e00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00E 11740 bytes
SHA-256: e7a4172cd4d065aaa6d1d3f6de3bc847b573e2776adfbb2d6a3bcf935247d0d2

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