Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e4eb250a2d6e22…

MALICIOUS

PDF

70.7 KB Created: 2021-02-03 22:00:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 962851c23b23adbbdb07c997a5b370d3 SHA-1: e5689cdac84ffa8e43d0b97b525ffcdd4b6776f6 SHA-256: d9e4eb250a2d6e22dd6ead0f8a5d974f4721ee810dd463180a336c08080e958a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=orchestral%20instruments%20pdf In PDF document text
    • http://lnstagram-verificationbadgeform.com/the_banner_saga_2_pc_gameplay2wotw.pdfIn PDF document text
    • http://livecopyrightverification.com/senuniwedowopogogosofk4nme.pdfIn PDF document text
    • http://storeplus.info/fixasogakr4iy4.pdfIn PDF document text
    • http://gatorama.site/34521267031xjozl.pdfIn PDF document text
    • http://amorexpo.com/71572350789xp6qe.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxovunevo/nja9dMt/93044662773.pdfIn PDF document text
    • https://cdn.sqhk.co/jorafulati/emAgjlM/game_call_of_magic_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/bBL7gdM/15885810357.pdfIn PDF document text
    • http://urro-hu.com/wigitiruzigewalepufizinarqt1zm.pdfIn PDF document text
    • http://consequences.space/freemasons_for_dummies_free_downloadqlnbw.pdfIn PDF document text
    • http://hrushch.space/25456356648rn1fu.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/jjhhjds/fine_line_paint_brush.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443619/normal_60040ff90f639.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/factoring_by_grouping_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/aircraft_landing_gear_system.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_off0000da78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA78 5424 bytes
SHA-256: a14df343be8bff2069698aca20da6a920c66e13e85932c113e13c6e8885d4577
font_01_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 9824 bytes
SHA-256: 186ea871ad70a628ac114839e60a5d41cd85d31245e174faef3ac6ca1cbc3f8e