Malicious PDF — malware analysis report

Static analysis result for SHA-256 31125ebf2c2d220c…

MALICIOUS

PDF

69.5 KB Created: 2021-02-19 00:12:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 30d1c611f45533dc067e3409a01d327e SHA-1: 09cbaafda2f3ef2bdca93e6097132f0efd8bc5c7 SHA-256: 31125ebf2c2d220cf832bad5fd342268e6e38f86b0be4ee01f8385194c2114a9
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://jacksth.ru/wix?keyword=2005+dodge+neon+manual+transmission+fluid PDF link annotation
    • https://duketexu.weebly.com/uploads/1/3/4/7/134725944/kototanuwuxezolep.pdfIn PDF document text
    • https://mutikotamibe.weebly.com/uploads/1/3/0/8/130874320/385864.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/46f0e017f.pdfIn PDF document text
    • https://sopunarexij.weebly.com/uploads/1/3/1/8/131857112/dolozupujof-fedenuvad.pdfIn PDF document text
    • https://sovurides.weebly.com/uploads/1/3/5/3/135349611/45713b.pdfIn PDF document text
    • https://wixokaregojes.weebly.com/uploads/1/3/2/6/132681478/zeripubenizajavikuk.pdfIn PDF document text
    • https://worubagazew.weebly.com/uploads/1/3/4/6/134639575/wurosatomefaluwilosi.pdfIn PDF document text
    • https://dugigoje.weebly.com/uploads/1/3/4/7/134754128/3964206.pdfIn PDF document text
    • https://naxulukituno.weebly.com/uploads/1/3/4/8/134879135/govixagej_jixirazawudikut_firozedum_mazusuferevojeg.pdfIn PDF document text
    • https://fizinizaboz.weebly.com/uploads/1/3/5/3/135304720/8081405.pdfIn PDF document text
    • https://mizijuwewis.weebly.com/uploads/1/3/4/3/134392366/2833644.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xufeguwopox.rf.gd/mabofutomaxepuzure.pdfIn PDF document text
    • http://jokilezitewoj.epizy.com/ayat_alquran_untuk_ruqyah_diri_sendiri.pdfIn PDF document text
    • http://xivavop.rf.gd/voice_pro_hq_audio_editor_mod_apk.pdfIn PDF document text
    • http://vitupofelomar.epizy.com/38959152180.pdfIn PDF document text
    • http://xifofemixogo.rf.gd/maxexosigapazageju.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_off0000d448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD448 5532 bytes
SHA-256: 43cf141553079894a2230ac5d75d72d1d4b938cc373ee59a52bc2419335da89e
font_01_sfnt_off0000e701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE701 10008 bytes
SHA-256: 0407a877588270ae41b910bc2ed34588f9e2ff9823616f32ea164a470aae4b90

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