Malicious PDF — malware analysis report

Static analysis result for SHA-256 278393ce399cfe5e…

MALICIOUS

PDF

79.3 KB Created: 2021-03-27 11:28:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a5d49fe60afb3e12dab958c2868ad1 SHA-1: 29488961e4ea747c089d8eaddba695cc83e60eaf SHA-256: 278393ce399cfe5e0737645d0e4f5c785f4a8d92e73592608d28edd943f56890
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a malicious domain, disguised with a seemingly innocuous query string related to pressure washer pump repair. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=how+to+fix+leaking+pressure+washer+pump
    • http://fallofelin.online/p90x_chest_and_back_workout_sheetsp5y2.pdf
    • http://daxikurasaz.iblogger.org/39880709413.pdf
    • http://xapizokawe.iblogger.org/tejipozudavogolepikox.pdf
    • http://trysalon.xyz/kunopilunevetulaxolarkiwi.pdf
    • http://junumidutuzakox.getenjoyment.net/how_to_set_tax_on_casio_ms-80b.pdf
    • http://merishwheelrecords.com/351871738332atpp.pdf
    • http://kudukudimox.sportsontheweb.net/adobe_acrobat_reader_for_windows_10.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/12006d7d-6b2b-4b28-8b26-77ef8aeeab36/a_christmas_carol_cast_2019_tom_hardy.pdf
    • https://uploads.strikinglycdn.com/files/bbb176fb-727d-4322-867d-2785b166a649/jovudinikajululom.pdf
    • https://uploads.strikinglycdn.com/files/c6401b18-23bd-464d-b82b-666488433bca/total_gym_platinum_setup_instructions.pdf
    • https://uploads.strikinglycdn.com/files/f7096d5e-e3dd-4407-81bb-8a70114d60ea/2017_lexus_gs_350_f_sport_interior.pdf
    • http://xipakugamuweren.rf.gd/anime_amino_apk_uptodown.pdf
    • https://uploads.strikinglycdn.com/files/85f4dc59-a8a9-4e13-9835-26dba7d3d8ad/how_many_companies_are_listed_on_the_tokyo_stock_exchange.pdf
    • https://uploads.strikinglycdn.com/files/b49fc596-2354-4f20-a878-6cd4ba0eef95/the_game_plan_full_movie.pdf
    • https://uploads.strikinglycdn.com/files/c73e2020-bdfc-49bb-a053-2670a8ffa636/how_to_check_ink_levels_on_hp_printer_6978.pdf
    • https://uploads.strikinglycdn.com/files/f6a3fd5f-d388-4b32-b13b-1fdbcb72f9bb/dell_e6410_charger_price.pdf
    • https://uploads.strikinglycdn.com/files/171ccc26-b8de-4bc7-8a77-8844bed00d44/how_to_draw_isotherms_at_10_degree_intervals.pdf
    • https://uploads.strikinglycdn.com/files/4d1a51e8-b914-449d-8727-22d06be1d0e6/sword_art_online_fatal_bullet_xbox_one_gameplay.pdf
    • https://uploads.strikinglycdn.com/files/8f5e67a5-39e7-4ecb-b2e9-418f4eb84a65/fama_fraternitatis_amazon.pdf
    • http://bolekatu.rf.gd/2018_subaru_forester_xt_limited_for_sale.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_off0000f865.bin
2cfb8a481d506ad3a56ded15200094eb213bb0c7510d09cdfd74bf46e93a3c87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF865 5500 bytes
font_01_sfnt_off00010b0e.bin
5dd3e9e011b5c264cd7ee80aaf115e98564520e3a06539452c5fc7e6372e5659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0E 11076 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.