Malicious PDF — malware analysis report

Static analysis result for SHA-256 604688ca730f4eee…

MALICIOUS

PDF

47.4 KB Created: 2020-11-08 13:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 80c9a23bd768d0ccab758092e5c66a34 SHA-1: 3f3facf197986d9ccfb11033b8f2205dc5bed5d6 SHA-256: 604688ca730f4eee217dca0d9f5814e93d9f289c36bacc20c8592f7c836631b0
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a link to known malicious redirector infrastructure. The embedded URL `https://cctraff.ru/aws?keyword=maplestory+2+soul+binder+awakening+guide` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution page. No scripts were extracted, but the presence of a malicious URL in a PDF is a strong indicator of a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/aws?keyword=maplestory+2+soul+binder+awakening+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450734/normal_5fa11586d9565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5f8da6ed027d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408864/normal_5f97002d978c2.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/2a543767-cbcf-4609-bb0c-483bdb6ed876/falalopes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d13f78-00af-4efd-8918-a1f92f5098b2/the_glass_house_tapes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/635b80e1-d50d-44b8-b38d-66d3c7509b5a/15717551460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4b3ce42-8e9d-4f90-b3bd-3e20268b224b/72766513092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e8429a-cd7a-4003-a4d8-127a8c7d9364/1523974667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff010f12-c476-43f2-85b4-3895a9a2f702/dagatubanapux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25f64b48-41d0-4092-9819-8c5fd00784e6/hacked_games_unblocked.weebly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4145a936-c96b-4c07-9cc3-0bfeb60b6817/76769093885.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9dd4f56-a52f-45d3-8712-42359496cff8/electronic_devices_floyd_9th_edition_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e86f4242-3607-4f6b-9cc3-579d102404b5/varuned.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccfab75c-54ff-4e86-b0f6-73ef1345ee6d/72197833186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ae531d-492a-4b52-be27-99959c8182b4/33485701991.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_off00007645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7645 5664 bytes
SHA-256: b36a3a569531527c49f5e814c0da255a0ae172d17df93db555c561750acbc60b
font_01_sfnt_off000089c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 11348 bytes
SHA-256: 45b42def9d2412fbc982eed34a0cbec0db5083b21834a213619d547d8533c783

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