Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef3497e46d4962cf…

MALICIOUS

PDF

88.1 KB Created: 2021-02-10 02:09:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1ef9721862e48f03aff0507e2fcd0d53 SHA-1: 9d2deda82de9ec42938eb464a8cfe0b8c4eef56b SHA-256: ef3497e46d4962cf73dd6bfad11827af413e797fca44aa52c97c2c8db43b4b98
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://seumenha.ru/aws?utm_term=cisco+routing+protocols+companion+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474727/normal_60123aa3767fb.pdfIn PDF document text
    • http://trickyturkey.com/700_common_words_shorthand_book_free_downloadbf69f.pdfIn PDF document text
    • http://on-arenas.com/jisavegakusedipufyvhmp.pdfIn PDF document text
    • http://oneshops.space/panasonic_pnlc1017_manual9wcze.pdfIn PDF document text
    • https://cdn.sqhk.co/xatuxazaz/CILYgiw/most_popular_music_2019_youtube.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495413/normal_600118e3e4d4f.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/6728655811dubwh.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/f43jgja/51536317987.pdfIn PDF document text
    • https://cdn.sqhk.co/reserujaj/jdpdnYA/smart_meters_health_concerns.pdfIn PDF document text
    • http://tefulen.iblogger.org/pubupilizixavu.pdfIn PDF document text
    • http://pipawopozovifo.iblogger.org/10_in_radial_arm_saw_craftsman_manual.pdfIn PDF document text
    • http://fb-copyright-help-from.com/topizifaxogitexukekarts1m.pdfIn PDF document text
    • http://bigchance.pw/zubefajurugomudovatujatemmj934.pdfIn PDF document text
    • http://xplaintome.ru/caterpillar_3306_service_manuald07pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417519/normal_5fe034141b478.pdfIn PDF document text
    • http://sodahq.club/lukigefaxilajipepu4mvzw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fcab528d2861.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491946/normal_5fe1178f48067.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_off00011b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8E 5300 bytes
SHA-256: 24bcbff1c4405d017d7901dc919c21e756cfd241c3b6640f60fad9d536768152
font_01_sfnt_off00012d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D76 11516 bytes
SHA-256: 26a32a589796d87e321ef0accec26fdab6e442f7ec91b59a200e42ba5da29b53