Malicious PDF — malware analysis report

Static analysis result for SHA-256 2300fe601977c16f…

MALICIOUS

PDF

72.0 KB Created: 2021-02-10 06:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9d03a5a15cc1e682bd6a8567890e5208 SHA-1: 6d701618f4a8588539bd608ec5083590858e72cb SHA-256: 2300fe601977c16f472444d7da0d9acbe390f606a7f249de64ddba86d67331a6
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/wb?keyword=belltech%20business%20card%20designer%20free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389097/normal_5fe5ed129241c.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/ieygcij/easy_assistive_touch_2020_uptodown.pdfIn PDF document text
    • http://catsism.com/disassembly_3d_free_download_pc_windows_7516p6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482648/normal_5fe694e1e5f85.pdfIn PDF document text
    • http://voztrans.ru/transferencia_de_calor_por_conveccion_ejemploslzm6m.pdfIn PDF document text
    • http://lasns.fun/ngha_cu_ch_xem_tt_ao3en8u.pdfIn PDF document text
    • https://jurulekoteg.weebly.com/uploads/1/3/4/7/134700509/rajipuvuvopaxeso.pdfIn PDF document text
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/pafuk-bumejobiw.pdfIn PDF document text
    • https://wuporebepumi.weebly.com/uploads/1/3/5/9/135981990/3679939.pdfIn PDF document text
    • https://kijapipova.weebly.com/uploads/1/3/1/4/131407887/5188255.pdfIn PDF document text
    • http://onesmall.space/timamufuzozikaretemevetc00h5.pdfIn PDF document text
    • http://tryne.xyz/51327551063mo8ey.pdfIn PDF document text
    • https://medofigovur.weebly.com/uploads/1/3/5/3/135316586/a0baa0.pdfIn PDF document text
    • https://netavobedeve.weebly.com/uploads/1/3/0/7/130775758/011b7190ff4.pdfIn PDF document text
    • https://galofufe.weebly.com/uploads/1/3/1/3/131384583/naboradavi_zupabuzevu_jovatuwati.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_off0000da6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6B 5472 bytes
SHA-256: 42a8aaa643cd7df372ee8102e13fafbe4396a4a98a506acc902ab8ee8070d6e8
font_01_sfnt_off0000ecfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFB 11276 bytes
SHA-256: 336728f21aa7a429f10f1cfac66dcc476eb18c4f1fbd5013e1f1a8e0f2dd6698