Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a6e89b48bb62feb…

MALICIOUS

PDF

78.6 KB Created: 2020-12-27 07:02:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: f515a797b3a80f7581727f3dd65dd20d SHA-1: e97e3bf4933861274abb6409d7339c87fa4d50b5 SHA-256: 9a6e89b48bb62febca31102c98a01870455dbe90ed4439ce2d16cc6c908c663d
154 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for malicious redirector links, specifically pointing to 'https://cctraff.ru/strik?utm_term=mountain+bike+shoes+near+me'. This URL is presented in a way that mimics a search result, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection further support the malicious nature of this file.

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://cctraff.ru/strik?utm_term=mountain+bike+shoes+near+me In PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/RJ015Q2/24227700060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489732/normal_5fafe052237c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379498/normal_5fddbdc524ee8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365627/normal_5fe45fed4bcf0.pdfIn PDF document text
    • https://cdn.sqhk.co/rawegili/Ubjdhfk/pixelart_builder_for_minecraft_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/UOGuttt/pokanaxazijuwerele.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/pokixovuxik/best_firewall_for_windows_7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/anemia_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/totafezop.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/photoshop_blend_modes_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/geziten.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/jumuluwilisuzere.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/66558001058.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/puxedujud.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_off0000f962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF962 5100 bytes
SHA-256: 5bf9de16a984652ed82f7d61468d256f98de917169efda5e4992cb2e2204f8a8
font_01_sfnt_off00010a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9C 10216 bytes
SHA-256: 5e41bd0ec5cdbc53bdad2b755008fd9b48aba67a3808015a0915491322c7c881

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