Malicious PDF — malware analysis report

Static analysis result for SHA-256 c302b03ad6803ce4…

MALICIOUS

PDF

75.8 KB Created: 2021-03-16 13:22:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95748b134d4bddd0a461146800f3fb91 SHA-1: d19d5571e280e1a687a9826fa3e59c5712a40726 SHA-256: c302b03ad6803ce4a164cc0d8bc1bd5237c8df61106102f434d0231a751c8754
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a site offering a 'bit heroes mod apk', suggesting a social engineering lure. While no scripts were directly extracted, the PDF structure and embedded URI indicate a phishing attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/wix?keyword=bit+heroes+mod+apk
    • https://cdn.sqhk.co/nuwobevina/cgcghVK/slideshow_photo_with_music_free_software.pdf
    • https://cdn.sqhk.co/kisasizaro/iIjbgie/wifi_repeater_software_windows_7.pdf
    • https://cdn.sqhk.co/vujuzira/cuxaidj/71528352881.pdf
    • http://piwifeg.22web.org/marketing_definition.pdf
    • https://cdn.sqhk.co/jumupebuvi/Fjajfhf/assistive_touch_iphone_x_missing.pdf
    • http://fupofejoja.22web.org/scanner_and_camera_wizard_windows_10.pdf
    • http://xurekovof.22web.org/world_airport_codes_list.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wazotojemov/template_for_budget_planning_for_projects.pdf
    • https://s3.amazonaws.com/lorifawuvawot/cookie_policy_template_eu.pdf
    • http://gemiwojo.epizy.com/tezuzixinejanoru.pdf
    • https://uploads.strikinglycdn.com/files/4c3d63a3-5a06-4376-ac4d-f1eaa58fff4f/cursos_de_ingles_online_gratuito_com_certificado_reconhecido_pelo_mec.pdf
    • https://uploads.strikinglycdn.com/files/8a5dd06c-bef5-4a70-9c01-9b1d96a673cd/resumen_del_libro_3_de_la_republica_de_platon.pdf
    • https://s3.amazonaws.com/zuvovoxigumuz/chessbase_for_mac.pdf
    • https://uploads.strikinglycdn.com/files/3a56012e-32b3-415b-9f43-b83cb5750439/71852503840.pdf
    • https://s3.amazonaws.com/tosevud/now_or_never_mp3_download_kendrick_lamar.pdf
    • http://rimugerumu.rf.gd/calypso_video_song_mp4.pdf
    • https://s3.amazonaws.com/bufexa/10607205086.pdf
    • https://s3.amazonaws.com/dudujopixejikug/7882173586.pdf
    • https://s3.amazonaws.com/bomifabipi/voet_and_voet_biochemistry_5th_edition.pdf
    • https://s3.amazonaws.com/zalomi/wordpress_blog_layout_template.pdf
    • https://s3.amazonaws.com/somisilegex/riwokebasozunanimuna.pdf
    • https://uploads.strikinglycdn.com/files/166acf57-b2a7-4c68-8077-03bb0f599b52/what_is_the_message_of_the_story_the_necklace.pdf
    • http://vonizevugopu.rf.gd/sikopamonajemuvotajizep.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_off0000ec1e.bin
0577ab5290996ce0ee427c5b08a16cb26fd9d3a04623ca0245a8797bd5aa30c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1E 5280 bytes
font_01_sfnt_off0000fde2.bin
f8a263070188bac95d70c4fbe5ea63a0e6a18a00a5641b27e7ec8145901cfd92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE2 10408 bytes

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