Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0cc9b6ee07b5db…

MALICIOUS

PDF

46.1 KB Created: 2020-11-04 04:18:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dab79a48adb1876c325635a0c3ddff76 SHA-1: d9f479c25982ada05ddb5ca1b5e5450967b7ac3c SHA-256: da0cc9b6ee07b5db7de7676b44302bbc5cc0abb07b0341039c677cdfffd29c44
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/123?keyword=deering+middle+school+craft+fair In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f88a05b52ceb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_5f98acbab04a0.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/6796162.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/4cf842764.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369912/normal_5f90010ede098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388293/normal_5f9685dba558f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dixaleko/25463545282.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/animal_phyla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a9bc04-787d-4ee2-9998-5bde17d1aa80/11845460068.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/19355497921.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/ruzezujovunenasuvapufur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b43951-94f2-4611-8e0d-60de6d399900/80862779413.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/92412951101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f129d7f9-4d02-4157-bc30-ae1a84222e51/descargar_word_2010_portable.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_off00007731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 5436 bytes
SHA-256: e4901d6c4078801832562b558837cdf744df8b31197f82b4f8731926c2a8c702
font_01_sfnt_off00008985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8985 9932 bytes
SHA-256: c1b1044122286175b41281653822a80a6fefb2afc131bb826190a6bbf818c159