Malicious PDF — malware analysis report

Static analysis result for SHA-256 460656f202cfece4…

MALICIOUS

PDF

64.9 KB Created: 2021-02-21 13:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 17da33f081a46c5900b7dc5f1e741eb2 SHA-1: bbdc74142b26e3bd9be66aa98a43ab45eec999f9 SHA-256: 460656f202cfece46c9967ace931ff47e8b8a22762dd562f094d320f2b9a6c7b
244 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
  • 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 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.
  • 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/strik?utm_term=ching+architecture+form+space+and+order+pdf In PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/jgsgg4X/ninja_dragon_costume.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/Izz4ijt/bubble_theme_storytime.pdfIn PDF document text
    • http://0fruits.space/csr8635_bluetooth_module_datasheetn8efu.pdfIn PDF document text
    • https://peziwotikiju.weebly.com/uploads/1/3/4/6/134602895/2404510.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478383/normal_5fdd3a30a21eb.pdfIn PDF document text
    • https://sapemeke.weebly.com/uploads/1/3/2/8/132814969/japoxuzuzukasig.pdfIn PDF document text
    • https://rifubagozoj.weebly.com/uploads/1/3/2/6/132695416/b46b8907729.pdfIn PDF document text
    • https://cdn.sqhk.co/ruweragi/bgjraSt/90938215692.pdfIn PDF document text
    • https://menafemudiwifog.weebly.com/uploads/1/3/0/8/130813668/miduniroruduko.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/iji8iiH/air_strikers_1945_pc_download_full.pdfIn PDF document text
    • http://udilische.club/39809292445fa7u1.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/chchjlk/kenner_star_wars_retro_collection_wave_3.pdfIn PDF document text
    • http://teagreen.space/zafewozomimotupiaap0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478664/normal_6025165fc7042.pdfIn PDF document text
    • http://afterdealer.pro/xemegewisemupelu8v2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBF 5440 bytes
SHA-256: 72e12a96af217478565a7b332ed397613506c2592292423aaca17de6ca076dcf
font_01_sfnt_off0000d117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD117 11404 bytes
SHA-256: aae8f52b64ab6a0570c5ad0635a8d5592ef1e2d24ea282dd2e1f0fb513219144

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