Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fde663e8b48be9a…

MALICIOUS

PDF

71.2 KB Created: 2020-12-26 01:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: abe5ecc7d94ff7ea1360d58dd8e1dccc SHA-1: d7aa16b2494680dc77099d443569ce1d9e5d6989 SHA-256: 3fde663e8b48be9a7ea3ccbb8c95d37c2f02c95b187749c4fa310c61a45e1c32
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating a phishing attempt. The embedded text and the malicious URL suggest a lure related to eBay auction sniper reviews. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly indicate a phishing campaign designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=ebay+auction+sniper+reviews In PDF document text
    • https://cdn-cms.f-static.net/uploads/4481676/normal_5fb6b1c23d9f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485809/normal_5fa92546aa2b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f872a00974ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f91d201455f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f888804a776f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500446/normal_5fcf0b7a10c4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458618/normal_5fe1bfb390c48.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/kukazowox/suvixodekada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690cbcf8-da42-4b8d-b31e-2196c2286ac4/newitomizubo.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/aw_direct_towing.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/g_name_whatsapp_status_video_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23321540-44ad-44d0-8a47-2149a2d0f122/93792018755.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/bioware_free_games.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/anemia_falciforme_diagnosticos_diferenciales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62de2e62-01e2-4b86-b9a2-dd79602f3c04/3550556384.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_off0000d943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD943 5244 bytes
SHA-256: d2f60b0e05207a05742326564a356dd28d4b5fb7d74f8e2e3821762de3ef65a8
font_01_sfnt_off0000eb42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB42 10588 bytes
SHA-256: 3d6d1a567c166737bf36240a6301d84402ff24837f4e55a4210c00f6f5ccae6a

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