Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e3065bd43d7d8c…

MALICIOUS

PDF

76.4 KB Created: 2021-03-14 09:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eaad9a803b2c736e275d9dbe53f528a4 SHA-1: 4ed69487d4a10cb3360c35adcdd56aaf5574acf7 SHA-256: d0e3065bd43d7d8c853b33019480ecf7ac0c72d4709eed9d2a430f0c10b3c279
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV specifically flagging it as a phishing trojan. The embedded URL points to a suspicious domain, likely used to host a malicious payload or redirect to a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit vulnerabilities or trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/award?keyword=bioteknologi+modern+pdf
    • https://cdn.sqhk.co/fazovivum/d0Zgcji/makatufonulaz.pdf
    • https://cdn.sqhk.co/bulixanejad/XhiBZtu/w3schools_js_quiz_answers.pdf
    • https://cdn.sqhk.co/wevavagu/i2igrPg/95814778690.pdf
    • https://cdn.sqhk.co/tazofexoz/jiO2ibT/best_server_tip_tracker_app.pdf
    • https://cdn.sqhk.co/merabuvi/hfAhjeL/gupejadavonisavovofimibib.pdf
    • https://cdn.sqhk.co/wizokawoxo/xOjhCXz/25261388547.pdf
    • https://cdn.sqhk.co/midipijikami/IjfWF8S/dungeons_and_dragons_movie_1980s.pdf
    • https://cdn.sqhk.co/vowibesep/abGgdjj/mirror_glaze_cakes_compilation.pdf
    • https://cdn.sqhk.co/zolilobup/Hzxgghi/kexadafeseboveru.pdf
    • https://cdn.sqhk.co/tifesijoja/giPhdWA/average_human_lifespan_usa_2018.pdf
    • https://cdn.sqhk.co/tivinarafuvu/tUha4hd/pixel_kingdom_spellbook_all_codes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zafibimutadoti/attendance_register_format_for_employees.pdf
    • https://uploads.strikinglycdn.com/files/7ebba90f-fe2d-43ae-9497-b8963378c35a/how_to_test_solar_electric_fence_charger.pdf
    • https://uploads.strikinglycdn.com/files/9177af11-72cf-4196-9431-c90f9a23a948/samsung_55-inch_q70t_4k_qled_smart_tv_reviews.pdf
    • https://s3.amazonaws.com/fadobirak/tobevapulorovururokovix.pdf
    • https://uploads.strikinglycdn.com/files/bccb57b9-35af-4d5a-8b6c-a68659ef58b3/vinyl_wall_art_instructions.pdf
    • https://uploads.strikinglycdn.com/files/26c91383-fe4f-4736-881c-846c8fb54ca7/what_is_understanding_in_the_bible.pdf
    • https://s3.amazonaws.com/zaxuledo/cnet_antivirus_for_android.pdf
    • https://s3.amazonaws.com/wanasuvedigo/autoimmune_hemolytic_anemia.pdf
    • https://s3.amazonaws.com/zerejibixupav/26120604359.pdf
    • https://uploads.strikinglycdn.com/files/6035c9bb-9caa-4acf-8fc5-7ba4118a201b/papari.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_off0000ef85.bin
d0efc5ed99606d77db534713d3eeb6fde2937925e6a0139701247e02e7fc15c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF85 5088 bytes
font_01_sfnt_off000100c5.bin
c3a9d486c8bc34734e71a84bcd07e2aca3c6d66d4b2fbc4e19fdd4938dab5a60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100C5 10296 bytes

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