Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b36be836c3a4811…

MALICIOUS

PDF

63.9 KB Created: 2021-02-10 20:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d03a3c5bd9f2702d1f0bad3ef42fa024 SHA-1: 22fc30db7472e65007f18c4f2920a2100cf778e9 SHA-256: 8b36be836c3a48111da845b249e8c4469b9e9ce45f3391f7aaf2fe938dd3d369
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://baarspo.ru/wb?keyword=basic%20information%20about%20indian%20culture PDF link annotation
    • https://cdn.sqhk.co/tubadaluzafu/qTgfheP/home_network_switch_vs_router.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402953/normal_5fe2eb0643b62.pdfIn PDF document text
    • http://shopmzm.site/royal_icing_wedding_cake_designs8xzfz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489844/normal_5ff7179968628.pdfIn PDF document text
    • http://reetodo.online/51133996349avbe2.pdfIn PDF document text
    • http://site-shop.xyz/beach_wallpaper_freet19ft.pdfIn PDF document text
    • https://cdn.sqhk.co/fesoxuleri/hgtKChe/whatsapp_wallpaper_images_butterfly.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/jgb6mig/kepadujiwe.pdfIn PDF document text
    • https://cdn.sqhk.co/lamajemomu/b6ZBjfe/68712988818.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/R5pgigd/virtual_5k_races_2020_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_601bb74532e4f.pdfIn PDF document text
    • https://wuwikofoxanep.weebly.com/uploads/1/3/1/4/131437976/dotekoxub_sugasobug.pdfIn PDF document text
    • http://love-your-lips.online/tulelefakakukisf9hz7.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/jidosatikim/5705951649.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/didajojumezifosijowi.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/malayalam_christian_songs_non_stop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/basic_english_grammar_in_tamil.pdfIn PDF document text
    • http://madukavinoxonal.epizy.com/aventus_group_annual_report.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_off0000bf48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF48 5356 bytes
SHA-256: ceaa16f60a63e0208ea753dceaad6fda94f7ae5df8704461f2b7275fa853e40c
font_01_sfnt_off0000d162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD162 9708 bytes
SHA-256: 030b4286f628b2dc5073eae9b5e9a4a201a1567ac9024de73782f1687cf37228

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