Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d810072c2fe926b…

MALICIOUS

PDF

64.3 KB Created: 2021-01-04 00:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: f6af5a187176b7389f5781616ea78eee SHA-1: d02a7364ad90ae8e6644fa8fa544d38199188803 SHA-256: 7d810072c2fe926b822fc57e7d6ebefcd3e6ce8156e50473e77795d06dde752c
196 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.
  • 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://trafffe.ru/wb?keyword=king%20coin%20laundry%20white%20rock PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417139/normal_5fa613601a362.pdfIn PDF document text
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/powomijo_zemasotewosofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5fe912505b08e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c8a5dae-a155-4302-b4c7-e1c82b7d2899/fasedunimodilab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da97417b-f8dc-4c7f-b62a-00f5c9792d0a/wevuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0884a6-48f4-4857-9df5-ca83f7c72493/49078326763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/312e227f-dffc-4a71-b44a-b405714da608/69010465142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85b72e5c-b81e-4d8d-a111-4ca5aca0bb77/kijuvozexeve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ef904d-73e0-474a-8306-f18c73868949/57107185120.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/gifukonitukavuroz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad8c6a3e-94c4-4be5-b6fa-9de42d2393a6/nubovawawowawoteda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c78cedd-6769-47e8-95d6-5221b36bf7b3/68775027148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f22d7e6b-bf14-4f4c-9332-d3ed24aeeb97/daxolupitarijiriva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/701be4e6-d55d-4583-ae02-e3d345afc487/33718324363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74d9e05b-8d4f-4ef2-bc36-c87228f44e02/cops_and_robbers_game_online.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_off0000c074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC074 5252 bytes
SHA-256: 03db2e53e1c20a888a2fa84c84748c4020e402c035a8dfd670f9156ed59c802e
font_01_sfnt_off0000d260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD260 9972 bytes
SHA-256: 16008beb4989f7d5e3abf72455f9840c0ed5b2290ea5222a8ae53c48ecf5407b

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