Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ffeec47bb6c08c7…

MALICIOUS

PDF

97.9 KB Created: 2021-03-03 02:51:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0367b85c95c67e75b457a5135b7fffeb SHA-1: 5e6501c5f3d47522c21c105bc92faf1e7e05b115 SHA-256: 7ffeec47bb6c08c77f05d65ffb417e146b61e42921b90a49501e211a0e144f28
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. The PDF structure itself is also suspicious, with duplicate object bodies, suggesting obfuscation or malformation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wb?keyword=lawn%20boy%2010685%20parts PDF link annotation
    • http://dnepr24.info/zivezikasugfuzuo.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/how_to_fix_the_heater.pdfIn PDF document text
    • http://d2-club.ru/pokew2eslh.pdfIn PDF document text
    • https://cdn.sqhk.co/ledazukogim/egcjgjj/8556295928.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/igPvete/best_free_stock_trading_simulator_app.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/4awgjif/kigarabixexudavedojaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/vipabumumiw/mPhdOji/86191899052.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/how_to_use_the_benedictine_breviary.pdfIn PDF document text
    • http://forecast.bet/way_back_into_love_piano_sheet_musicfjuyj.pdfIn PDF document text
    • https://cdn.sqhk.co/senosekagoko/UhjKEjd/55040362922.pdfIn PDF document text
    • http://xugaguf.mypressonline.com/wimazorafibal.pdfIn PDF document text
    • http://probmake12.xyz/knight_brawl_hack_downloadl21by.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kujapomib/thinkpad_t430s_ram_type.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/letter_format_in_english_for_sick_leave.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/marvel_cinematic_universe_films_in_order_of_story.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/ibps_computer_capsule.pdfIn PDF document text
    • http://tikomiwewo.atwebpages.com/dieta_de_7_das_para_quemar_grasa_abdominal.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/algebra_aurelio_baldor_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/the_firm_john_grisham_full_movie.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/washington_post_subscription_cancellation.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/beluziguwexodazemopevufu.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/bim_360_glue_page.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14021 5724 bytes
SHA-256: ff4074900e42f9e98500e3fedc572d68d13259b5106bcbe11a187a193c7854a5
font_01_sfnt_off000153c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153C7 11592 bytes
SHA-256: 29fbf067d2167357e03cbb7935ac4966bfc1835e3c95407fb41797de535468fb

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