Malicious PDF — malware analysis report

Static analysis result for SHA-256 e108abd534c5a04c…

MALICIOUS

PDF

44.2 KB Created: 2020-10-30 17:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b5c1423e915e085bd7c85026a765c20f SHA-1: dd5a72a302406aa09e7f0085fe7ffdde0f5f532e SHA-256: e108abd534c5a04cadb27abfd4e928956b04f489562e422acd1c55c3b6e06ae9
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?keyword=persona+5+strength+confidant+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5f96fbfe84986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f9a7c3dbfd5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f969f3e1dce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384160/normal_5f904eedbda10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4017bd1a-2646-4273-a366-c3f796d9f2e9/1586207101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282bee20-7c1c-4bf0-96d2-ca33a6347e11/buramowetomarejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e4d71c5-2032-4ba2-aa3a-cab2bde6a3f2/ion_product_expression_for_barium_phosphate.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/12294778128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5435f8a-a8d5-4335-82fc-4f7bd21bf183/74666566995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb6b6ead-acc8-4e06-90a0-901b2e78244b/22315054842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3df2ce1-8791-40de-b14f-1c495c2faf98/22864006376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d4c0524-ced0-4a0f-aa8a-23dbc084fdc8/34420610693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb61685-6b16-44d9-adf8-d88856c7f4f6/vujowaliri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1c322a4-8015-4a32-930f-2e7f87771249/xomij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F59 5260 bytes
SHA-256: eb28405dcdbb3539f4bc8f7c97592e9e2f0b484e28ddeb696a0ff7adee04ed03
font_01_sfnt_off00007125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7125 10532 bytes
SHA-256: 98a3695d4061132e808303ce626fad172e7ab1cf690ad70402e4c477da138648
font_02_sfnt_off00009512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9512 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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