Malicious PDF — malware analysis report

Static analysis result for SHA-256 70293227ddf33f60…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 06:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4bd21f9c4d63a8f14b45f744a743028d SHA-1: f8c54c15d184d0d6235939679464dcbca43e47b4 SHA-256: 70293227ddf33f605814d751fce25f92f0a4fd770f1312ad7a896aa6a92dbd21
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=para+que+es+el+zinc+picolinate PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450248/normal_5ff6803e89065.pdfIn PDF document text
    • http://legiontry.online/piano_lesson_plan_for_beginners2qri5.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/3594507.pdfIn PDF document text
    • http://winoraama.website/kdigo_guidelines_for_fsgsrgs8c.pdfIn PDF document text
    • https://xovozenoz.weebly.com/uploads/1/3/4/3/134348708/9583166.pdfIn PDF document text
    • https://taxajefikudo.weebly.com/uploads/1/3/4/7/134765143/0b47e4c.pdfIn PDF document text
    • https://buzotenugi.weebly.com/uploads/1/3/1/4/131408099/figetefuj-junepi-bezezutuxura.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448343/normal_6038d2585b4b2.pdfIn PDF document text
    • https://bezakolat.weebly.com/uploads/1/3/4/3/134321390/pureno.pdfIn PDF document text
    • http://medtechnika1.ru/687697577674nqlj.pdfIn PDF document text
    • http://shop-you.xyz/pozebi7zvw.pdfIn PDF document text
    • http://trikotoria.ru/blender_2.82_tutorial_free_downloadfq0l4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mulotuzasokafo.epizy.com/wufunisuxujeb.pdfIn PDF document text
    • http://xibaxet.rf.gd/comma_practice_worksheets_for_3rd_grade.pdfIn PDF document text
    • http://refitebi.epizy.com/jojo_weather_report_joestar_birthmark.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_off0000dc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3C 5104 bytes
SHA-256: fbf3558b15b9e79af35f976ea097236b83e746925e2316d98429ee3caf7003eb
font_01_sfnt_off0000edba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBA 11556 bytes
SHA-256: cb9d298162cc48462ca4982182537631a0a3098b3b7954d2444d4a2fb9c2e0a8