Malicious PDF — malware analysis report

Static analysis result for SHA-256 63b892811eeb1acf…

MALICIOUS

PDF

76.9 KB Created: 2020-12-17 07:32:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6ef7b7b4cbad64fadf77d50c5f5729f8 SHA-1: e8d7d474754a79673e71ecd64c1dda99b7994f5f SHA-256: 63b892811eeb1acf9d8f49ff74d9b809cbf20a043e937371fc79d406dc8f7266
174 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://traffine.ru/strik?utm_term=pathfinder+water+breathing+races'. ClamAV also detected the file as 'Pdf.Phishing.Trojan'. The presence of PRC/3D content and ML classification further support its malicious nature, indicating it's likely a phishing lure or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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://traffine.ru/strik?utm_term=pathfinder+water+breathing+races In PDF document text
    • https://cdn-cms.f-static.net/uploads/4453902/normal_5fa7f5754a084.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5fc4578c0a62e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3046cc14dfd36feff55ec/t/5fcbff04978da30c56e8b02e/1607204613035/best_hits_aerosmith.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64fc43398ff7515529cec/t/5fc83cc0a9f67830caf3e0c6/1606958274018/49513147115.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57603ea4a794d5663f41f/t/5fd035885347e801a81907a2/1607480714465/for_freedom_of_speech_arguments.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58858ff13940aa25ef992/t/5fce541133187724c4223c1d/1607357468340/timelidekovuzo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b8b3bd14ff0dd2a863f9/t/5fc9dfa487b36f46d401ffd2/1607065516614/lorak.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc545c1084698658e7b29ac/t/5fce2da72fa8bc6bcd13019a/1607347623706/cyber_hunter_game_download_for_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf8b664be903ae63ff416/1606219959299/lane_tech_chicago_staff.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59e7a97599144eeea7ff/1606375911858/zeduderun.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/paypal_money_adder_wordpress.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d5d111f6a41984a77cd7/t/5fd6883f102ca46975e90d9c/1607895103417/vegegubod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1cdd0ec917750a3de3367/t/5fc811ef3d9ef76cdd365b2b/1606947312880/92111094146.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_off0000f085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF085 5484 bytes
SHA-256: 926f0d9d6eb806bd776c239d7693e856f26696f7dbd48e23ec5f0faf70edeccc
font_01_sfnt_off00010341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10341 10552 bytes
SHA-256: b83a5e5f21885bc7d24e44c0a7c39c827990943ef0cf90ffea37d3df52f095b9

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