Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c9435c0cdaad16…

MALICIOUS

PDF

68.3 KB Created: 2021-02-24 00:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a5a5c93d322a6c6b58eb2d5cd4ca9267 SHA-1: 79c7e93431473ce0cc96c45f3b49130b7c0e1e64 SHA-256: 15c9435c0cdaad16293ba785751824b3417f55acb3f4741722eec68d77e269b4
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://leonvi.ru/wb?keyword=ntc PDF link annotation
    • https://cdn.sqhk.co/wemopizajazo/edgdthg/nupufilotolure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408711/normal_5fd665402d332.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/jJsjege/oscar_the_grouch_quotes_scram.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481830/normal_5fe5333d4f82e.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/ffgca2n/server_2016_remote_desktop_services_manager_missing.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/hjfheL0/farming_jobs_in_iowa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421944/normal_60318d00cff19.pdfIn PDF document text
    • https://jokuduzasaru.weebly.com/uploads/1/3/1/3/131381103/4f0e3c6412.pdfIn PDF document text
    • https://cdn.sqhk.co/juvowisire/geHjjgc/16097458374.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/ehhgfhj/movie_wallpapers_for_iphone_x_download.pdfIn PDF document text
    • https://minufagotokuwak.weebly.com/uploads/1/3/4/4/134489045/7855912.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/jfNpXgf/pipite.pdfIn PDF document text
    • http://walawabijuver.22web.org/vuxunotisuba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bexamunexena.rf.gd/15754244917.pdfIn PDF document text
    • http://kewumexor.epizy.com/veggie_recipes_for_weight_loss.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_off0000c9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F7 5896 bytes
SHA-256: 2cb76d052ca5a20f373bf16886459cc7979eb7d011450b5aa516a0f977d7be0a
font_01_sfnt_off0000de11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE11 10980 bytes
SHA-256: f0b1a5e5291ed4a7b1be23380419ce56c99a36e027ad9e309bfbfeff4d647802