Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad408e30ca7aa77…

MALICIOUS

PDF

85.0 KB Created: 2021-02-26 06:02:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 53a39cb0a1046abca38652dc9593f6ac SHA-1: 2c0dae9d911bafeba2b38ae8c272cbe052cd325e SHA-256: fad408e30ca7aa770b0905fbba383c62370d93f7f69c0391833840c991047e59
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/award?keyword=etica+para+amador+pdf+capitulo+3 PDF link annotation
    • http://dorulezebum.sportsontheweb.net/worexifamaj.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/35559868854.pdfIn PDF document text
    • http://kadabafomelu.66ghz.com/altaf_raja_ke_video_gane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447885/normal_5fe95a4c88ec5.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/uhhgjge/angry_birds_dream_blast_level_2004.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/ia58jfQ/krita_download_chromebook.pdfIn PDF document text
    • http://paxebijevoz.iblogger.org/how_much_money_does_richard_lustig_have.pdfIn PDF document text
    • https://cdn.sqhk.co/bafiweba/iaCBmgi/padawu.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/lapesebuzilalem.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/xafeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zasotozipob.rf.gd/cisco_introduction_to_networks_chapter_2_exam.pdfIn PDF document text
    • http://wewenak.rf.gd/56107344026.pdfIn PDF document text
    • http://tajiralilumes.epizy.com/83288962805.pdfIn PDF document text
    • http://xiluwudikipo.epizy.com/ronalokeruka.pdfIn PDF document text
    • http://tifilumiteva.epizy.com/ruwodefinipex.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_off00010dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCA 5244 bytes
SHA-256: 0fa08615bbaf56e15abb4d75d6c5690de3f012770cc6b7fd6e8df0e34c7057fe
font_01_sfnt_off00011f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F94 11772 bytes
SHA-256: 1e66212cdce846f8d0f33c061253f464f11bc0d8df2a9d97e5c85f480e0cc5b4