Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0f97cdd7d31b2a…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 01:01:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 848c8f37fcd63e433373dc0bd90e0d85 SHA-1: 16c58a6aeff7aa7dc07ba30c6c697dc70699d6ae SHA-256: ab0f97cdd7d31b2a11afa0fd384a47b4564c341b758f018ad6488cf6b8df3ab5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=dell+inspiron+e1505+battery+plugged+in+not+charging PDF link annotation
    • https://cdn.sqhk.co/javomekoru/jmoahhE/photo_pip_photo_editor.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/gjRUHG9/spin_the_wheel_game_show_rigged.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_602e5460716b6.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/9xbjegj/likert_scale_options_frequency.pdfIn PDF document text
    • https://mubelumovetofap.weebly.com/uploads/1/3/1/8/131856402/2363013.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379837/normal_5fe3a76f7a15d.pdfIn PDF document text
    • http://netekepipavosis.sportsontheweb.net/what_does_suspicious_package.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/8028042.pdfIn PDF document text
    • https://jimiwijir.weebly.com/uploads/1/3/4/5/134525211/fcf77b.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/D8dHYge/soap_noodles_inci.pdfIn PDF document text
    • https://cdn.sqhk.co/jupozaregu/vgjhaji/29005974320.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/gJDchNg/zombie_shooter_games_for_pc_free_download.pdfIn PDF document text
    • http://mizebojusur.mypressonline.com/chinese_calendar_baby_gender_2020_to_2021_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/RtlAhii/65423888877.pdfIn PDF document text
    • http://vanimerukaguto.scienceontheweb.net/a_dance_with_dragons_archive.pdfIn PDF document text
    • https://kuratiwupojaxu.weebly.com/uploads/1/3/4/0/134017491/rogerinu-lozovibilovox-metimopozek-nemegubolaxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jotudokizer.onlinewebshop.net/dewugonijugoz.pdfIn PDF document text
    • http://jasesazolaf.myartsonline.com/hearts_of_iron_3_mods_steam.pdfIn PDF document text
    • http://bavatesivo.myartsonline.com/lumoxusowibusitonigud.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_off0000de89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE89 5896 bytes
SHA-256: b5c367d26485c89824266990c380fa51790148ce4a547313d37770dfbf98f9b6
font_01_sfnt_off0000f2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A3 10508 bytes
SHA-256: 407a45eb543a46a312114848120abb5849104dcd438634fe4efe43c93a0b66ac

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