Malicious PDF — malware analysis report

Static analysis result for SHA-256 e560fdd163239291…

MALICIOUS

PDF

44.9 KB Created: 2020-11-01 06:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d6de4c72d8417a66f65f673955c58771 SHA-1: d898930fed875935ac83ceae549b3a6882bbca52 SHA-256: e560fdd16323929164e50d7abb0f26d38141da4a79df096e82060e3d6ad2cf6c
94 Risk Score

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/aws?keyword=servsafe+study+guide+2017+pdf In PDF document text
    • https://dotigima.weebly.com/uploads/1/3/4/4/134404546/wakiganibam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_5f9d474beedcc.pdfIn PDF document text
    • https://jonowukamox.weebly.com/uploads/1/3/4/3/134372820/4735945.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/tajemibirumemiv.pdfIn PDF document text
    • https://kadamoxezegawuf.weebly.com/uploads/1/3/4/3/134347408/misukofewozaj_ganinenivuxisix.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/00ae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_5f9ba32201659.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/0d7b7ca4-7c79-433c-8e56-ea897cff0792/fire_chief_wood_furnace_fc1000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ef1b12-f206-4219-9e4d-a701b6014458/54928459610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6839c19-626d-4221-aa8d-9bc1be9fb2da/bivubuxad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd99a7d-2ed6-4886-b3d8-caec7093ec16/vikelimawev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36444ece-807c-4fde-8a2d-bdd9f00a2a17/57273436306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2050247-3085-4e42-b940-1fd4971abc4f/kusefexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ee55aae-cd79-4d95-a355-c6eae0f17cd8/cer_practice_worksheet_high_school.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_off00006e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7D 5848 bytes
SHA-256: eede07d11b91b7781da80a6d501bb42ad5bbca193f5bf1cfb3b9d73396213534
font_01_sfnt_off0000828c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828C 10508 bytes
SHA-256: 573ff56a153ee1bdc48ed016380e9283c0404400d5b25990dab8af2b97e4a205