Malicious PDF — malware analysis report

Static analysis result for SHA-256 253eafa1a589353a…

MALICIOUS

PDF

74.6 KB Created: 2021-02-13 04:09:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8cd6449504677f084e0e639fb6913b83 SHA-1: 78873a40a930cfa7cad152e09b732caba4b402cc SHA-256: 253eafa1a589353a1d8833a8092a3ebb72ac85a6815fffea34a4bc5d6cf95311
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=sailor+moon+serenity+song PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4493905/normal_601eddb9ec962.pdfIn PDF document text
    • https://cdn.sqhk.co/nibedogoxov/dghg4jh/josilomotuzidesorufuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/ratobomebal/hghhdjd/clueless_costume_designer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_601a72a25da10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391899/normal_6004b1c00b192.pdfIn PDF document text
    • http://milanomoda-italy.website/benoit_mandelbrotkpm81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370092/normal_5fe45ae753c93.pdfIn PDF document text
    • http://gonzo-3d.com/king_of_fighters_98_move_list_pctuiuc.pdfIn PDF document text
    • http://winoraama.site/solidworks_weldments_exercises4gax2.pdfIn PDF document text
    • https://galujamisone.weebly.com/uploads/1/3/1/8/131871568/55077390d41.pdfIn PDF document text
    • http://7lessons.space/ancient_mesopotamia_map_worksheetcr2yi.pdfIn PDF document text
    • http://dostafood.xyz/unable_to_format_sd_card_ubuntucp7sk.pdfIn PDF document text
    • http://bbflowers.net/comma_or_semicolon_2_worksheet_answers8ec4a.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/vonuxagupeduze/36694813120.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/compound_adjectives_worksheet_grade_3.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_off0000e627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE627 5208 bytes
SHA-256: 7332a95b792703c74e7150de43e127a5d9b94f729a6f890fb97b83aabdd86cb2
font_01_sfnt_off0000f7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CB 11172 bytes
SHA-256: 0e2e04b430439773e49de9e08df8611cfa9d31f149e8b688a02a41c48dec2110