Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6512f63ebb03505…

MALICIOUS

PDF

75.6 KB Created: 2021-03-10 12:17:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1edf9576a0a1965db3dce9ec94c8a70c SHA-1: 75493fdd96e7d63309f44a31ea1bc51dcd0a57a7 SHA-256: d6512f63ebb0350519973e70500d1ca981cb8168e6ee98a221817fd657b529b8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious content, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/award?keyword=ielts+writing+task+1+2+vocab+pdf
    • https://cdn.sqhk.co/fopajuxalaso/bgjgfxV/96585791943.pdf
    • https://cdn.sqhk.co/jasolugud/jgihVia/best_non-_all_star_nba_player_2019.pdf
    • http://goproits.com/cyberflix_android_4._40m673.pdf
    • https://cdn-cms.f-static.net/uploads/4481527/normal_603b11c8be6a5.pdf
    • https://static.s123-cdn-static.com/uploads/4464053/normal_5fce3f1721c02.pdf
    • https://cdn.sqhk.co/juxefirapuf/22CgdLh/pc_shooting_games_free_download_for_windows_8.pdf
    • http://discount50.pro/sopa_de_letras_para_imprimirip1wp.pdf
    • http://ighelperscenter.com/bright_starts_swing_and_bouncerbbiu6.pdf
    • https://cdn.sqhk.co/temazajilib/AghsrIr/road_draw_bike_rider_weight.pdf
    • https://static.s123-cdn-static.com/uploads/4495269/normal_5ff43a100724a.pdf
    • https://cdn-cms.f-static.net/uploads/4455403/normal_601df36ddb17c.pdf
    • https://static.s123-cdn-static.com/uploads/4410414/normal_5fe0e6c055f3b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a7c5f941-c586-4ede-a2bd-14ad9d36142f/2427899791.pdf
    • https://uploads.strikinglycdn.com/files/0fa02fb6-f563-473c-b3fb-6431acdb70c8/how_to_eat_fried_worms_age_appropriate.pdf
    • https://uploads.strikinglycdn.com/files/030de763-25cb-45b2-bbdb-10c573267650/clasificacion_de_funciones_calculo_diferencial_ejemplos.pdf
    • https://uploads.strikinglycdn.com/files/7895cb15-4c84-456c-8cf2-416e323759d5/the_secret_life_of_walter_mitty_full_movie_sub_indo.pdf
    • https://uploads.strikinglycdn.com/files/99e9d441-c874-4737-86a2-3a74ff46a0c1/sesiwafoze.pdf
    • https://uploads.strikinglycdn.com/files/8424a4c7-841a-4f61-a830-ec32a00efde5/how_to_calculate_molar_mass_of_one_element.pdf
    • http://nogurinuzelajer.rf.gd/architect_key_performance_indicators.pdf
    • https://uploads.strikinglycdn.com/files/bce1cf95-3af9-4917-80f3-62387dfa4ddb/twenty_thousand_leagues_under_the_sea_summary_of_chapters.pdf
    • http://vuxikujare.epizy.com/common_core_math_worksheets_8th_grade_answers.pdf
    • http://vituzitozitu.epizy.com/kaxutolidujajutamujejoxa.pdf
    • https://uploads.strikinglycdn.com/files/88e878ee-ce30-471c-a738-14f25b41f195/necchi_sewing_machine_repair_manual.pdf
    • http://pababevo.epizy.com/hillsong_worship_broken_vessels.pdf
    • https://uploads.strikinglycdn.com/files/cb6bd9e3-552c-4386-ac6a-15cbb7b2292a/44370577807.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8f8.bin
9fba776cb8040d4df50afe4197589870fb5bdf337f0db8e44ca99fd719cea6fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F8 5800 bytes
font_01_sfnt_off0000fce4.bin
24b5d89b24c8323c86e4a4907f6cd46d9d5635a1bd87420178a3b2a639138051		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE4 10532 bytes

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