Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4a25481742e0c7…

MALICIOUS

PDF

72.4 KB Created: 2021-02-24 16:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b638f17534172da0b9551fad65f57d0b SHA-1: 04e19d3d50816ca8ce2f55b4d8ed6109455d1435 SHA-256: 6a4a25481742e0c7b1b96b180b7477be7494d23c671b95baae9792fd50115890
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/123?utm_term=what+is+the+best+hook+to+use+for+saltwater+fishing PDF link annotation
    • http://lazujifoxupa.getenjoyment.net/waripabizo.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/NDvAhdF/liburaveje.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/iahi3sD/basketball_trick_shots_ideas.pdfIn PDF document text
    • http://1xbet-regi.site/process_flow_chart_template_excel6m3jq.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/YiethTp/sunaxiwafojolal.pdfIn PDF document text
    • https://cdn.sqhk.co/wediximewoza/jic3jeW/pizisutakewijog.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/60361170659.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/KgiSbjc/zaraperidugi.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/pinodonor.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/juwofuxufijup/vonimenodi.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/24931409110.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/9469498230.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/sosumewopowawiset.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/cuantos_tipos_de_investigacion_de_mercado_existen.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/why_is_flash_player_not_supported_after_december_2020.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_off0000df64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF64 5340 bytes
SHA-256: f748aafc2abbd810fd2baa66fda407c9a8512252db0d8263ee8b5db5d039a50e
font_01_sfnt_off0000f1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A4 10184 bytes
SHA-256: e08321fa45cea39ecd0a0febdd1c6b7e78b30ca5129351f3d50c03bb89a487f9

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