Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf08d52e47e56a7…

MALICIOUS

PDF

67.6 KB Created: 2021-03-06 13:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a802ff2d121ddd81154dec3ac88afe6a SHA-1: afe712cf1db4ef6de886e9021ecb5a0d9a9d46e2 SHA-256: fdf08d52e47e56a7f49841d9f24e9ff4d1c20f31fc3b585d827926864369b4a8
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://vilenefex.ru/award?keyword=japanese+country+cookbook+pdf PDF link annotation
    • https://fimuvuxufubewi.weebly.com/uploads/1/3/4/4/134442536/8a091f3a43a89.pdfIn PDF document text
    • https://zovotinaselon.weebly.com/uploads/1/3/4/5/134589175/b73e3cd8ad08e8.pdfIn PDF document text
    • https://xizenarinirogav.weebly.com/uploads/1/3/1/4/131437147/fomaxijijinofi-mitib.pdfIn PDF document text
    • https://nikusajim.weebly.com/uploads/1/3/4/6/134666133/3693955.pdfIn PDF document text
    • https://cdn.sqhk.co/gasosivifug/jaRryZ4/mobile_ringtone_app_download.pdfIn PDF document text
    • http://motikadumumelu.22web.org/99392033508.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/x4ohjOn/foot_cramp_toes_separate.pdfIn PDF document text
    • http://nusowutevu.getenjoyment.net/saluvenora.pdfIn PDF document text
    • https://cdn.sqhk.co/dubibuwa/ejjgeii/xozonipi.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxiwimemo/ibDiajb/ngk_movie_songs_ringtones_download_telugu.pdfIn PDF document text
    • https://mojisavavuke.weebly.com/uploads/1/3/5/3/135312470/8ed6a9.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/hrAKOih/sulefibiziluwududofabuvug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojibikifi.myartsonline.com/holding_up_the_universe_quotes.pdfIn PDF document text
    • http://favekagopu.epizy.com/17969154703.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_off0000cd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1D 5412 bytes
SHA-256: f44415906377515e4a0e7fa73d7d951aeb4ea2429842edb560d3d0dc15ee4bfe
font_01_sfnt_off0000df9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9C 10008 bytes
SHA-256: 9fbdb03d3bd863a5d2574dfca3d4780b3d56783c5273fc5cfdec2705d8cd931d