Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad46bdaef48277ec…

MALICIOUS

PDF

71.2 KB Created: 2021-02-09 14:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0485a309e10860877e8514934fbfc908 SHA-1: 3abb45c70af58e4e89c141415d45585aca9e1bf5 SHA-256: ad46bdaef48277ec4b8fda35ca7663c9a3a3a58baf0b84b889b48533f97c1b0f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=information%20report%20examples%20stage%203 In PDF document text
    • https://lakerevuko.weebly.com/uploads/1/3/4/6/134654656/7de0b0ec9ec603.pdfIn PDF document text
    • https://xozuwowofar.weebly.com/uploads/1/3/1/0/131069921/97284.pdfIn PDF document text
    • http://hookup673.site/energia_fosil_ventajas_y_desventajasw7c1g.pdfIn PDF document text
    • http://healthyforczechrepublic.site/top_ten_pop_rock_songs_of_all_timeraozi.pdfIn PDF document text
    • https://cdn.sqhk.co/pepitaji/d1Whbhe/download_game_clash_of_three_kingdoms_apk.pdfIn PDF document text
    • http://pitijebubitos.iblogger.org/70512047130.pdfIn PDF document text
    • https://cdn.sqhk.co/nukunudakiju/gT77DJJ/nasa_meatball_logo_png.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/kShehak/doff_super_cat_and_dog_repellent.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/cigMgcb/youtube_music_90s_country_songs.pdfIn PDF document text
    • https://gogadumipoti.weebly.com/uploads/1/3/1/0/131070618/veralozada.pdfIn PDF document text
    • http://alsamcctv.com/magic_world_of_aniactzdl.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/QiaEBzw/ben_10_alien_heroes_names.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/cxjikib/nail_art_and_spa_lowell_mi_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/danexili/MVgicgc/cheat_talking_tom_2_mod_apk_download_uptodown.pdfIn PDF document text
    • https://duraxotiparukog.weebly.com/uploads/1/3/0/7/130776433/7875958.pdfIn PDF document text
    • http://aduo5.online/472944130094b7xx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://molezegifa.rf.gd/burejeduxizeki.pdfIn PDF document text
    • http://kedaxesipuwid.epizy.com/nighthawk_kn-_copp-_3_user_guide.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_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 5392 bytes
SHA-256: 1f6c16198637c6bb34cd07e232e5b35552090fa8dfcaf4e453048a889f86e9a7
font_01_sfnt_off0000eac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC0 10852 bytes
SHA-256: e3b40548d658a9601052c7cf30f1c80198260dff204c9bb326f1d5d9aa3a5818

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