Malicious PDF — malware analysis report

Static analysis result for SHA-256 5598d5e47fc338de…

MALICIOUS

PDF

70.4 KB Created: 2021-02-21 18:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bf0f8f872c4ec814e5a6fb3246d2402d SHA-1: 3a409098bcf45f1f1039e4d303d57e22294b8e95 SHA-256: 5598d5e47fc338ded77b566de6039b35af8ba6a361f21a837ba699e6da9e07c8
126 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
  • 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/123?utm_term=how+to+determine+atomic+mass+number PDF link annotation
    • http://perevod-card2card24.site/roommate_or_roommate7rajl.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/fjegdha/restaurant_daily_opening_checklist_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/f4hi0ig/31134868782.pdfIn PDF document text
    • http://investorlands.ru/40038296468314ef.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/dFidijj/real_bike_racing_download_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/jcZjhhh/blocky_gun_paintball_3.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/HCqjghf/34880802636.pdfIn PDF document text
    • http://pearhaidhr.fun/pupojemevewematisavenewjbmh2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449181/normal_5fcc356bdf58a.pdfIn PDF document text
    • http://legko.travel/pelikinemedugjfyu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_601aa3007cc35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413564/normal_6025c8272a274.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389394/normal_6002b2c779166.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/Cefhbgf/domaxadogogaxemapekelo.pdfIn PDF document text
    • http://instapriz24.online/catholic_chat_rooms_free_no_registrationbsqmw.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_off0000d54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54D 5248 bytes
SHA-256: dc34ddc1b1a8247eada66f6783e0ed69365c17b1cadc4972e366f06c67d4b050
font_01_sfnt_off0000e715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE715 10992 bytes
SHA-256: b1da6cb8b7150e3d1ab86a6dfd97a4571bc8e532b0d17980c24b86fee4be7d3e