Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b89d327d2dd9cc…

MALICIOUS

PDF

33.0 KB Created: 2020-11-07 13:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6f14b038af5a739b78b7ff235e34df8e SHA-1: 89a96b2574fa455c73d38a98a336677b08947f90 SHA-256: b6b89d327d2dd9cc48203198be708d78389f28628c85fa8bbf467d0e7f99e5dc
94 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 'ggtraff.ru'. The embedded URL in the document body, when reconstructed, is 'https://ggtraff.ru/123?keyword=24+inch+lg+stacking+kit'. This indicates the document's primary purpose is to lure the user to this malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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://ggtraff.ru/123?keyword=24+inch+lg+stacking+kit In PDF document text
    • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/posezajufepulitepek.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/vetuwexirara.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/kafag.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/6666737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409417/normal_5f9aba7875393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385412/normal_5f8e47b012934.pdfIn PDF document text
    • https://dijumigomeruke.weebly.com/uploads/1/3/4/3/134309809/24cac51ed8.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/8303804c-e301-4ebb-bda0-da411a5a4bc9/nanazodudapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f4b5b6-8f24-47df-8179-df686a6f7c30/gujodok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f8740b6-0e8d-461a-aa06-c7c6bc7df821/eve_online_ecm_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d10ce3d8-8fa0-40ff-bcb5-02345ecd8bd1/13005056699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbbc0231-126d-442e-9fed-b9c00da0d0dd/40241722780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eb1cc5f-3dd6-42e7-8fd4-c5f3f2d5f0f5/492622736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c86ec75-8e41-49ec-9ab4-7f8ff788a6bc/56690708042.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_off000044db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44DB 5156 bytes
SHA-256: ff732fda6c9094c83c8cc6d3142f1c810d53736a71415b1a2f61cf4f34ba36e5
font_01_sfnt_off00005671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5671 9744 bytes
SHA-256: 5e7d66c25faf0e1b0f157787ae0c26b1c2040c00b4f1dce2de01ed204ee4bc1d

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