Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7957b138a0ac7d…

MALICIOUS

PDF

82.0 KB Created: 2021-06-10 20:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 1d9dab47b82ee6419eb9cfd70faed140 SHA-1: ce08e6fef7b701b364ba4fe6db7f2947e74db0a9 SHA-256: 2f7957b138a0ac7d58d115735b9a0edb7712eea07aecb70bd1c713a4b5fa2302
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous external URIs, many pointing to disposable hosting, and is identified as a link farm. The primary URL, https://pixomot.ru/pbw, is likely used to redirect users to malicious content or phishing pages. No scripts were extracted, but the PDF structure and URL patterns suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pixomot.ru/pbw?utm_term=present+past+future+sentence PDF link annotation
    • https://sinujezujano.weebly.com/uploads/1/3/1/6/131606051/d5f0d9d6.pdfIn PDF document text
    • https://warororob.weebly.com/uploads/1/3/5/3/135314520/fumezusawebevutiwu.pdfIn PDF document text
    • https://masoluvilat.weebly.com/uploads/1/3/4/5/134576839/1697497.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369772/normal_5ff71789db872.pdfIn PDF document text
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/bulopomijakokexo.pdfIn PDF document text
    • https://sasozepawises.weebly.com/uploads/1/3/4/3/134315695/3450385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_606623ba4f869.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zixememot.pbworks.com/w/file/fetch/144971457/acknowledgement_for_industrial_training_project_report.pdfIn PDF document text
    • http://xemeganavon.pbworks.com/f/zonepukibosegagibod.pdfIn PDF document text
    • http://fevosezew.pbworks.com/w/file/fetch/144454806/14509338704.pdfIn PDF document text
    • http://metudebebi.pbworks.com/w/file/fetch/144618981/95079405352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2711fa60-ddc8-4ada-bf58-c2362cbba334/sleight_of_mouth_patterns.pdfIn PDF document text
    • http://kuperuxowix.pbworks.com/w/file/fetch/144598866/xufuvotavidut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f780c4-1eea-41db-971e-356526da17e2/defending_jacob_finale_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d1d6d1-e44a-4930-9677-af96ee78f600/how_to_install_techstream_on_windows_10.pdfIn PDF document text
    • http://zuguwar.pbworks.com/f/descargar_super_smash_bros_64_espaol_para_android_sin_emulador.pdfIn PDF document text
    • http://gapufipi.pbworks.com/f/how_to_use_rainbow_carpet_shampooer_attachment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d684c7e-9f0f-4e39-8f70-43496fbdef9a/zagukov.pdfIn PDF document text
    • http://saladolu.pbworks.com/w/file/fetch/144591546/how_to_check_call_history_in_vivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/522049d1-785f-45ae-8222-2e8b23f4d0c7/libovezaneluwifalogax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6340057a-3586-4563-a182-c028c661bd30/93806510961.pdfIn PDF document text
    • http://piwomimagito.pbworks.com/f/vovoxixid.pdfIn PDF document text
    • http://dejimebez.pbworks.com/f/tanzimat_dnemi_iirinin_zellikleri_maddeler_halinde.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_off00010369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10369 4980 bytes
SHA-256: 8f02e8ecdc41d5ed705b95cd7aecb573efed15421f1ac0a26dce8fedf6d92ea3
font_01_sfnt_off00011465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11465 11320 bytes
SHA-256: a95ec43eac0a1f1925256ec14f7896867b6a8063a7fbeeb3169ae798da3b4540