Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca70e1515c489cf…

MALICIOUS

PDF

78.7 KB Created: 2021-02-28 16:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1eb911c30dcb26b8a346b755bd53c119 SHA-1: aa0b0b6368c34c2f9560d761aab2e367c402dc8d SHA-256: 0ca70e1515c489cf6607397156fb67f93a38455780bea5c3c49e420ae0656591
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/wb?keyword=high%20standard%20olympic%20serial%20number%20dates PDF link annotation
    • https://tasekesin.weebly.com/uploads/1/3/2/6/132695719/kebodejalabe-zaxota.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/0gggjib/bevorawazipurezope.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/12415437236.pdfIn PDF document text
    • https://cdn.sqhk.co/mifodirula/ghbdjbh/bopazadoxekofanivokodoj.pdfIn PDF document text
    • https://cdn.sqhk.co/xosujopi/Whhigjd/kotelezuzisixes.pdfIn PDF document text
    • http://sallehub.xyz/8489528499q954l.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/CNqibXS/18987076547.pdfIn PDF document text
    • http://teaitalis.space/james_hadley_chase_books_in_hindi_pdp3yev.pdfIn PDF document text
    • http://italiahot.space/gulfood_exhibitor_list_2019rg76c.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/life_and_death_in_shanghai_summary.pdfIn PDF document text
    • http://remontnatali.ru/jigijenibotoma6ws6n.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/91747908515.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/6r3igif/zombie_smasher_armor_games.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/ckgcggj/live_wallpaper_4k_wallpaper_pro_apk.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/gozilum/best_free_excel_budget_spreadsheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/weighing_measuring_accuracy_and_precision_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/edgar_cayce_guided_meditation.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/character_reference_sheet_base.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_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 5692 bytes
SHA-256: 8ad99b8d90fe671cd86b102a867c7d556d7bae183022125a6e2d849fb7c60ce3
font_01_sfnt_off000108ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BA 10828 bytes
SHA-256: 5aaea644c976b7b2216d2274b20cf32561474cff1879b1facc1b0d18562ec1cd

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