Malicious PDF — malware analysis report

Static analysis result for SHA-256 f81867a0d22d9296…

MALICIOUS

PDF

76.8 KB Created: 2021-02-28 17:35:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 14fbfed6f6ecb1ba76a91d3e5ef7a50c SHA-1: 6100833d7d4c33b47afe5935c38c24469947395c SHA-256: f81867a0d22d9296bb220092b26cae01a3b15371713e1735f0d709041149d194
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://ponafet.ru/123?utm_term=masters+in+global+supply+chain+management+salary PDF link annotation
    • https://zoxuxidez.weebly.com/uploads/1/3/0/7/130775284/f31c17898c.pdfIn PDF document text
    • http://xteenware.online/meboropelogudwxe7f.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/ibps_guide_english_error_spottingdxy7h.pdfIn PDF document text
    • https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/d6a30edb386e7.pdfIn PDF document text
    • http://kotexob.iblogger.org/87986551396.pdfIn PDF document text
    • http://yazansoft.com/906991687609sq61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5fdb038aa206b.pdfIn PDF document text
    • http://czecheducation.space/slither._io_codes_2019_iosam8h1.pdfIn PDF document text
    • https://xoxekoxezugox.weebly.com/uploads/1/3/0/7/130738790/vilod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415322/normal_5fd8ddf67b89f.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/xufaxoferugod/lovevo.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/bhimavaram_bullodu_songs_please.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/milolumamakisofu.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/81589168343.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/how_do_i_connect_my_phone_to_my_hp_deskjet_2540.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_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 5592 bytes
SHA-256: 4da65a2e0d6d0981417c1c4432c53583fec6726d1f1d2e6eab2e9ce0ab2ebb43
font_01_sfnt_off00010278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10278 10456 bytes
SHA-256: 5077f90e30ab46c1fe517d5d1d0350d2d7d007850540f4339cf45c8b61a48c71