Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc6f9bd77c124e0…

MALICIOUS

PDF

76.6 KB Created: 2021-03-09 19:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d97356545f5186a04f7900528bf1383 SHA-1: 2735834609dfb984e1d7f22dc0e26af37087ebbc SHA-256: ecc6f9bd77c124e0ee03ac639e740d3b4ba71d1158a84d316dc1049d7bac367a
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URLs, such as 'https://dugedepap.ru/123?utm_term=assassin%2527+s+creed+identity+free++ios+11', suggest a phishing or malware distribution lure, likely attempting to trick users into downloading further malicious content. The document body, though heavily obfuscated, contains text related to game downloads, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/123?utm_term=assassin%2527+s+creed+identity+free++ios+11
    • http://ersoil.fun/jumapumifodcr9d0.pdf
    • http://ogranifruit.space/what_shampoos_have_salicylic_acid_in_themy4b1i.pdf
    • https://cdn.sqhk.co/vefobinibe/bADshah/fedufab.pdf
    • http://neledaxiwogume.iblogger.org/rpg_maker_ace_character_template.pdf
    • http://laithub.pro/when_breath_becomes_air_audiobook_vktjp2q.pdf
    • http://ipoteka.net/how_many_calories_in_ocean_water_from_sonic3yxv6.pdf
    • http://zotagur.22web.org/nijisiguganexixi.pdf
    • http://kalekoneta.iblogger.org/galaxy_tab_2_7.0_p3110_custom_rom.pdf
    • http://blacktea.space/13492254462pz0mw.pdf
    • https://cdn.sqhk.co/jatobeguji/EGWgi7h/zurolasigodix.pdf
    • http://autobaff.xyz/sasara8bnon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/da2ad988-e3a3-4905-95dc-79f7616f778c/cyberpunk_red_character_sheet_app.pdf
    • http://xigivemarigefa.rf.gd/dapulikub.pdf
    • http://lojosikol.epizy.com/3._1_the_rock_cycle_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/f3d45936-e42b-4445-b00e-308f527408c0/garmin_920xt_band_australia.pdf
    • https://uploads.strikinglycdn.com/files/160eec11-1362-4cbf-b1aa-7e4f7e927108/13950291171.pdf
    • https://uploads.strikinglycdn.com/files/6f2fdbd2-bdd9-4c0b-9825-8ed520e4f819/sony_a6500_vs_a7iii_dxomark.pdf
    • https://uploads.strikinglycdn.com/files/3455895b-3478-47a1-a788-2a68bd1ee0f8/using_trigonometry_to_find_missing_angles_of_right_triangles_worksheet.pdf
    • http://vekujekodabudu.epizy.com/89230709325.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_off0000eec0.bin
83a3edc1fe1090fd8a3a7b00afd0e84d21f56f093d051035f75cb3b28c6d2939
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC0 5160 bytes
font_01_sfnt_off00010073.bin
3693d65c8ea10b7dd0e75b5686270bfa1d7e3e187cfc507663abd31dfa8bfc02
pdf-font-stream PDF embedded font (sfnt) at offset 0x10073 10856 bytes