Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ea8c84f9c2e93f…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 15:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6e79cd7e55aeaf55ace623137ff7b407 SHA-1: 072966e2b71a41090287008be8cc2f88136ab664 SHA-256: e1ea8c84f9c2e93f5da81a2a83d26045956e235ed8abb232d16291092682f4c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=a+doll%2527s+house+questions+and+answers PDF link annotation
    • https://kesozelakix.weebly.com/uploads/1/3/5/3/135300748/zurore_zudilefabuxo_wizadimubefu_zibaf.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/8887658.pdfIn PDF document text
    • https://cdn.sqhk.co/nafumozuwe/ggfc1fR/lenovo_chromebook_charger.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/gxDC9xy/67099214584.pdfIn PDF document text
    • https://toxupuxuforiri.weebly.com/uploads/1/3/5/9/135966975/7222013.pdfIn PDF document text
    • https://genezekanoz.weebly.com/uploads/1/3/1/4/131413678/1431302.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/7037141.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/oGjjig7/92325990246.pdfIn PDF document text
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/4be090bdbe36b0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_6000f03b50f2d.pdfIn PDF document text
    • https://wemosixalaku.weebly.com/uploads/1/3/4/3/134315089/454740c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499309/normal_5febd30171366.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/pHYxMhf/air_pressure_for_size_3_soccer_ball.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_60203481df6f3.pdfIn PDF document text
    • https://sojikopel.weebly.com/uploads/1/3/4/7/134760404/4671385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459058/normal_60256c1da0b55.pdfIn PDF document text
    • https://kunoloxudiruk.weebly.com/uploads/1/3/4/7/134767428/wobazomat.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/pusori/chama_chama_new_version_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/uu_amdal_terbaru.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/age_of_empires_4_serial_key.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_off0000dc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC54 5152 bytes
SHA-256: bc729695393b7544f79f4bdbea48ed491926584332555faef3a4f10702b4fcb9
font_01_sfnt_off0000ede5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE5 10048 bytes
SHA-256: 5c47b1259cece947a68d8293bc784e9163d700a135d175cf63aaadf91d70bad8

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