Malicious PDF — malware analysis report

Static analysis result for SHA-256 884bab9867456d93…

MALICIOUS

PDF

72.7 KB Created: 2020-12-04 04:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 85849c137d64f30c3889658b98b92b20 SHA-1: ed7d60e9a54ad83a5a9374b415ef03dce40353c7 SHA-256: 884bab9867456d93cf017885d581b5f96789ac94dbe105fdf14325dee83b424a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/strik?utm_term=wheaton+train+station+parking'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly indicated maliciousness.

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://traffking.ru/strik?utm_term=wheaton+train+station+parking In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408712/normal_5fa971cfe1d46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5f8a52dd6a685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f969d838e041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455670/normal_5fb41d576d7eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416786/normal_5f9f681c7bc5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_5fb25c7f4f0c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452389/normal_5fc79a1aa42ad.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/7132c428-a5d4-4093-a67e-875ca0c6e9a6/store_castorama_jour_nuit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fc5c5701972c46e3c66a89a/1606796657300/punokabelazupaxikime.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea21c30a162e0c52977d/t/5fc149e164571256546b474f/1606502890764/51570541022.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d70dc14dfd36fef128e0/t/5fc8c3f7d32d01267801c5a1/1606992887835/easy_fruit_dessert_recipes_no_baking.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5bf0a2757459be32ffe/t/5fc58332145a8629dc6ddd00/1606779698650/carolina_herrera_212_mens_cologne.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b7b7bf71053ccb0f47f0/t/5fc0fb82f81c9a2a0cc55104/1606482824602/litotelogunajeres.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4187eba8-0211-4f17-829c-702de4125745/95288495913.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_off0000e09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09D 5124 bytes
SHA-256: d32410146b3401a6ec7d1daf3c8ac9a61af0755beb4a21756ad18fbf9d58fb5f
font_01_sfnt_off0000f219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 10668 bytes
SHA-256: 2b8f285b67be607679b774621326b66703a05840d8b3e48b505ed14f2cf60204

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