Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb8e89a205f97a1…

MALICIOUS

PDF

55.6 KB Created: 2020-10-30 17:45:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1042f05a6852d52d447ecc05ebccbc12 SHA-1: 9e01dd62ff49c4cc6f6fb31d00d19c1021de18b4 SHA-256: 7bb8e89a205f97a12161b3ca2a61a8e21bb72d5c44c70ec57e5db3822e8349a4
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://ggtraff.ru/strik?keyword=joana+horde+guide+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408713/normal_5f926912b77e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426960/normal_5f9ba5986b9f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f87da43aab7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f8bccfad6a23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407780/normal_5f99b094e823e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5f92e4b607c24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8b4f7a0a2b3.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/2d578b01-a85c-4cc9-b82f-431df8f21853/jafatinunomifikugoluvu.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/kemetovan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61b2f82b-40af-4496-b57d-000453c75c99/43017228771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2408cf89-5504-43f9-ada0-311ba0e41058/kamasutra_positions_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/17615598241.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/sapikaxozuxuxokovusabef.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/qualities_of_an_entrepreneurship.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/furnace_filters_20x25x5_lennox.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_off000099b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99B3 5080 bytes
SHA-256: 9e44d5686e8cc285b195059bc0d1245e95e57a26158d47066b4e350dd838c831
font_01_sfnt_off0000aaf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF9 11464 bytes
SHA-256: df66243937d3c4f83601eec8d51cd3383b023f509e06eb049e81ec5cdb57c9b7

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