Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e214c178e8ed33c…

MALICIOUS

PDF

69.1 KB Created: 2021-03-01 22:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1649c44b1c305e5a4bcfa5e6eb19ed2c SHA-1: 290a4eb4de66efc80e6dff0bf09257ff8501fcca SHA-256: 8e214c178e8ed33c64e7e32e672ffc10e56ac6ba845b0893707b7977fec9ccd4
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://kuzutuzo.ru/award?keyword=2005+chevy+tahoe+owners+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425760/normal_6032a1510c357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382638/normal_60062b479c134.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/AShh5hg/voltage_drop_chart_12v.pdfIn PDF document text
    • https://xajekedifa.weebly.com/uploads/1/3/4/4/134469171/sizitazufarulibajuw.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/fibiwibamatumi_mefixosuti.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/hjhcUMb/best_video_editor_app_iphone.pdfIn PDF document text
    • https://fiwebafifike.weebly.com/uploads/1/3/4/8/134885554/60d9b45d.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ibVgjje/mananujisowonu.pdfIn PDF document text
    • https://gilotimo.weebly.com/uploads/1/3/4/8/134899899/gejuva-junapokudutetul-kufagisegol.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/jgWzYgh/koala_brain_vs_human_brain.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://peronilekovo.rf.gd/diditaxafawi.pdfIn PDF document text
    • http://jenurinufaka.rf.gd/47785680226.pdfIn PDF document text
    • http://gefuxexo.epizy.com/38113999497.pdfIn PDF document text
    • http://kunibenurupamiv.rf.gd/xemolewabelezekafop.pdfIn PDF document text
    • http://tafoboverel.epizy.com/tukapezotaxulujafom.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_off0000d194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD194 5596 bytes
SHA-256: 7b1a3ee884f89c56d07073831bcd7036a47cf62630eeedaf0ccde4fa51140819
font_01_sfnt_off0000e48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48F 10304 bytes
SHA-256: 87596b35a09bd40b5d7cafcc927591252a034c59f2c9886d1ad5566ac1af9701