Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9bac4d0be8af13…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 08:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9ca97cbc82fbdb6b571e3dcd678b9cdb SHA-1: 4b2d0bf45712b9c60256adeadd69a05fa69aecc9 SHA-256: 3c9bac4d0be8af13117aff1b76f3e2c1d615351b7cb8b4dd8d86b63d143aceed
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/award?keyword=pride+and+prejudice+movie+2005+dvd PDF link annotation
    • https://wonulabanasilod.weebly.com/uploads/1/3/1/4/131482851/xewazewaviteti.pdfIn PDF document text
    • https://cdn.sqhk.co/baveninale/jhxjaha/best_sonic_boom_mod_addons_for_mcpe.pdfIn PDF document text
    • http://naturfresh.space/how_to_set_up_a_sansui_tv_without_remotew4c7q.pdfIn PDF document text
    • http://nagajavanof.22web.org/walasewezenufi.pdfIn PDF document text
    • http://biolinkus.me/64776280721m9elr.pdfIn PDF document text
    • http://bioforcecolumbia.site/aao_de_exigir_contasf9ntm.pdfIn PDF document text
    • https://xusudunegowubub.weebly.com/uploads/1/3/0/7/130739081/kewireliguboj.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/nupojiwelopixixizurasockq6.pdfIn PDF document text
    • https://cdn.sqhk.co/kubibosujiko/gcaElgi/among_us_free_chromebook.pdfIn PDF document text
    • http://salebox.shop/724792640278j1rp.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/ghcti4x/tugajipibepegovotatazozo.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/Zhehiih/cossacks_3_units.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tetokimofomimiv.rf.gd/14606188463.pdfIn PDF document text
    • http://fudodub.epizy.com/what_to_eat_to_have_an_alkaline_body.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_off0000d562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD562 5544 bytes
SHA-256: 222f7813733e75da11c5471110bc9d5ba4bb266457dd394213dcc030956f01b0
font_01_sfnt_off0000e83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83B 11956 bytes
SHA-256: 7a8703fecc92e64c6667c2c12ff6cb140637067ec412b1ee91e8cc636dbb0ce8