Malicious PDF — malware analysis report

Static analysis result for SHA-256 372afe5615d37096…

MALICIOUS

PDF

39.2 KB Created: 2020-10-30 14:49:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e88168f64b4cbeb20b47cbda026bfe1d SHA-1: dbd51c120d1a1105a3e32040ef7252fc2448b725 SHA-256: 372afe5615d37096474aca97be5a1b6d675101ddc5eaa1e360d49ab1a901fefe
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://gettraff.ru/123?keyword=hogwarts+express+train+set In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_5f9348cf6c2e6.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/5224065.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/7593995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402710/normal_5f9baac33fe14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f93292a093f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367289/normal_5f873df5a5a5e.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/ef82e0d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8419/5014/files/26585899932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/297d5f32-a008-4c28-8c9a-b17832e62030/40065004882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6d28d9a-1969-4b92-b3c2-5b8114e41aba/20519149926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07ad9e24-dbe5-4f5c-a631-066331a423ac/secrets_of_mental_math_by_arthur_benjamin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261abc82-d497-4d66-bfee-29c2c1213c65/kirasemuvevodududefex.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_off00005a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A12 5076 bytes
SHA-256: d731d2283e128de40ac5713f36b0e4d2c5fe2544adf91a990aefee5de46e318e
font_01_sfnt_off00006b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 10752 bytes
SHA-256: d3fd633c8f8504974658f67e209d2fe4da40fad9dcf6bba6a6f80318d4a536d5