Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8144afb8be4f689…

MALICIOUS

PDF

70.2 KB Created: 2021-02-17 12:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dbd265be51264f2c248a37a96b9ff539 SHA-1: 8a84418c4318288189ac4dc0d7702afa4a742b2d SHA-256: a8144afb8be4f6890808e92981d1ae719d2771f2bdbbfd273bada56e69ae0d32
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wb?keyword=trust%20yourself%20you%20know%20more%20than%20you%20think%20you%20do%20meaning%20in%20hindi PDF link annotation
    • https://cdn.sqhk.co/gajerivab/ejjhcZa/feditafeloruxegasatinol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405946/normal_6010dd159afd8.pdfIn PDF document text
    • https://resezavurafufok.weebly.com/uploads/1/3/1/4/131407395/58ef5787.pdfIn PDF document text
    • https://sezowizubuv.weebly.com/uploads/1/3/0/8/130874308/rejarofesojop.pdfIn PDF document text
    • https://subolamamojoga.weebly.com/uploads/1/3/4/7/134719430/xejaruxipis.pdfIn PDF document text
    • http://shoop-fe.ru/salangai_oli_songstmif6.pdfIn PDF document text
    • https://jixejuterekafiw.weebly.com/uploads/1/3/4/5/134508928/gibuka.pdfIn PDF document text
    • https://wipovatoz.weebly.com/uploads/1/3/4/0/134012317/d1ef2.pdfIn PDF document text
    • http://madewithsunshine.com/kipesuk2g8ep.pdfIn PDF document text
    • https://vagenovujod.weebly.com/uploads/1/3/1/3/131398358/banovol_dugilowurasu_litupunawe_xugoxijit.pdfIn PDF document text
    • https://ziregorex.weebly.com/uploads/1/3/5/3/135351653/59d35ed5c1.pdfIn PDF document text
    • https://cdn.sqhk.co/sovixojer/hhb2hft/star_trek_fleet_command_guide_dilithium_mine.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/eifphie/79963238991.pdfIn PDF document text
    • http://acupofjacob.com/learners_licence_test_questions_and_answersutukv.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/gjlzjhd/download_game_dumb_ways_jr_boffo_s_breakfast.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/dobesogum/99023822150.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/gapogenosut.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/cebuano_christian_songs.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_off0000d56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56A 5528 bytes
SHA-256: f36ebbc4e9d78250e95aa9a06ec9c373c08303c020b55c0f22aa8937e7746535
font_01_sfnt_off0000e827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE827 10420 bytes
SHA-256: 9df0021bfdb3374c318bfb97fcf7195982bc390b1e8466f148547576ed9761fe

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