Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d3ce66c7eb611c4…

MALICIOUS

PDF

48.6 KB Created: 2020-11-06 00:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: dec3a6840c0c8f95ad1fe3042ca22439 SHA-1: cf4e5a95f97e70d7c676146c165eb4c0194685de SHA-256: 6d3ce66c7eb611c4e8210ec73271d400d54f8c5526018ca01244cff48116fdc9
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to trick users into downloading content. The embedded URL in the document body, 'https://gettraff.ru/strik?keyword=a+court+of+frost+and+starlight+pdf+download', is the primary indicator of this malicious intent. While no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest an attempt to deliver a secondary payload or phish for information.

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://gettraff.ru/strik?keyword=a+court+of+frost+and+starlight+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5fa475fd08f27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5f9cf26128077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402936/normal_5fa0c2b99f166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379732/normal_5f93329459a05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f8a9d5ec7847.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391620/normal_5f8e11c480e15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5f8b13aad35ab.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/b92c2149-7fa9-42e3-91c2-d807e049e7be/sonele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05fbbefd-6eff-467d-9d91-8742d50c1279/roblox_hack_apk_download_unlimited_robux.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/jibimilufowuxubusun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea1e44d-62d0-4178-80c9-73c0fce13b42/4123398942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28212972-72ac-45dd-94ed-5098a81d8fee/gefomofamawixapemizovariz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c5d7994-3bc3-41c2-9b61-fed1f4f66a70/watch_fringe_online_free.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_off00007fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBC 5496 bytes
SHA-256: 52ba14ab84136e272cc1d7f2312dfa4ef580abc20a2c6db40aaaf835bf581512
font_01_sfnt_off00009276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9276 10176 bytes
SHA-256: f96d6cd02077962dd442fbe6d740e370abee1e01cb5c88c072c3d9e9af166f5a

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