Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae01febaef3b51c…

MALICIOUS

PDF

73.8 KB Created: 2021-03-03 23:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 213d5ef4414350d0e846002e9fb48412 SHA-1: cd53dff2ef037428868101f152db53b2c782243f SHA-256: eae01febaef3b51c7081fcc224042f5702d4348fc3dbaadfde983fc9fed00341
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=cyber+security+risk+assessment+definition In PDF document text
    • http://iminn.ru/jeralezkno3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369329/normal_6031dcb4569a7.pdfIn PDF document text
    • http://appless.space/doduxodewawobmzx1s.pdfIn PDF document text
    • http://olx-delivery.cc/66512834151awtlq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424025/normal_5fee25202e169.pdfIn PDF document text
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/34aa732b659fc.pdfIn PDF document text
    • https://mejekuveko.weebly.com/uploads/1/3/5/3/135392268/dutejevulikamapu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458856/normal_6021a6fe148bc.pdfIn PDF document text
    • http://podcard2020.site/keloneweziletakikk3kh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456114/normal_601d8ec35e8cb.pdfIn PDF document text
    • http://chaptejvxz.fun/agronomy_terminology_booka70i0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410731/normal_5fd97d72b3582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464303/normal_5fdb3bf3cbe2f.pdfIn PDF document text
    • http://fastgetme.online/bitenotibowuxma7u8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482216/normal_5fc938c13e8e4.pdfIn PDF document text
    • https://ninofupefuf.weebly.com/uploads/1/3/1/8/131856131/4284916.pdfIn PDF document text
    • http://bionatur.space/health_the_basics_13th_edition_answerscudwu.pdfIn PDF document text
    • http://svarka-aurora.online/38098312989ntsqw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE483 5344 bytes
SHA-256: 2cb333b798890999c30199233d2cfc8080d2d8144cdd9329dbed114098391722
font_01_sfnt_off0000f6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A7 10368 bytes
SHA-256: 3a06bc02b652987c698f5d8d6a42c072830be7ee8bab5446eba27bdf62756fbc