Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d2fd477add988a…

MALICIOUS

PDF

71.7 KB Created: 2021-02-25 16:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: c0615adbb637d8f8d74fd34e85cbc3bb SHA-1: b3360496160327459fe83749bcb81ddb6ebf9241 SHA-256: 88d2fd477add988af167ee2cf5f60aa3024c2a12f8d9d7146f19a4143a2e33cf
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/award?keyword=inteligencia+emocional+2.0+download PDF link annotation
    • https://cdn.sqhk.co/vidikusupegu/EPEeXgh/16460882306.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/4f0h8iG/14034283097.pdfIn PDF document text
    • https://janusizexagelu.weebly.com/uploads/1/3/5/3/135337128/linifi.pdfIn PDF document text
    • https://bawokotofebadu.weebly.com/uploads/1/3/4/5/134507933/676e02.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/zafupazuwijoj.pdfIn PDF document text
    • https://kowagazobavov.weebly.com/uploads/1/3/0/8/130874359/1901835.pdfIn PDF document text
    • http://terogit.iblogger.org/ikea_bed_sheet_set.pdfIn PDF document text
    • http://fijixedi.22web.org/30822102179.pdfIn PDF document text
    • https://pebajubidu.weebly.com/uploads/1/3/1/3/131383648/36d14f2e.pdfIn PDF document text
    • https://gixinizolovuz.weebly.com/uploads/1/3/5/3/135348456/2302499.pdfIn PDF document text
    • https://xuguxoxarakijob.weebly.com/uploads/1/3/2/7/132740494/8f82601f0.pdfIn PDF document text
    • http://gitaxodepa.iblogger.org/oracle_sql_developer_19.4_download.pdfIn PDF document text
    • https://jimedugevebuz.weebly.com/uploads/1/3/4/4/134437071/3951544.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/widuxade/pofitivosogesonupo.pdfIn PDF document text
    • http://pavefobigemaxe.rf.gd/books_to_read_online_free_without_ing.pdfIn PDF document text
    • http://nenedabex.rf.gd/the_richard_d_wyckoff_method_of_trading_and_investing_in_stocks_download.pdfIn PDF document text
    • http://gisabolawavurad.epizy.com/1720184240.pdfIn PDF document text
    • http://parakotevetit.epizy.com/16385135175.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_off0000d72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72C 5320 bytes
SHA-256: a564dda2cda102b0506765679f0ff4e575e491f7bb01177a4dad09e996309bb4
font_01_sfnt_off0000e94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94C 11880 bytes
SHA-256: b97b33c7ffc34fe1af7280556a81be6b5cacb63bcba20dff1e243e3aa1bf2c62

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