Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f372522d0a7b18…

MALICIOUS

PDF

65.3 KB Created: 2020-11-09 23:29:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 6373f41a3ce0b4c0e7a592e4ae7fab2d SHA-1: 75f10a47ef6787a965b70f792d076c60808e63d2 SHA-256: e5f372522d0a7b18187222d77e3638d943ad49ab84a3aca6b46c89ae48dce381
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/strik?keyword=como+se+vestian+en+los+80 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401505/normal_5f9a2bf83b63b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_5f933493b3c9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_5f919e96ef069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390068/normal_5f8fa01da16d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382949/normal_5fa34ebfd64ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381082/normal_5f98641cf385a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385030/normal_5f9c419502898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f8c80d04990d.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/zakunafu/96944764784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/454e6bc5-2fb3-41b6-a20c-0c454ddd49a2/gorozosomaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30490283-74de-4a78-acb8-e5563b5e9edf/kegixakakidaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718413d0-6626-4df9-9521-d4da590f8b23/jetimatarefigelomis.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_off0000c20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20E 5036 bytes
SHA-256: 1e50ed60b9d5dc060dccc7e0b0be39d81793bd53b94d5db933eeeb6bd1989016
font_01_sfnt_off0000d318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD318 11080 bytes
SHA-256: 41a4b79b6c1e7d360d92eebc53c1577905990ec2d19a0e6c57cd4ef53ac1ebfe

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