Malicious PDF — malware analysis report

Static analysis result for SHA-256 c567c69044cda899…

MALICIOUS

PDF

38.6 KB Created: 2020-10-30 10:09:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: db6f32c843bcd830f15ca2b1f43ac55b SHA-1: d7ff46513ff0d5ac5a50e1c884130d244d402a8c SHA-256: c567c69044cda89947dc8cd558837d470631d02db54fa4cb9d09896aec81b8c9
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://cctraff.ru/aws?keyword=communicate+15th+edition+pdf+free In PDF document text
    • https://ronesafoko.weebly.com/uploads/1/3/4/3/134312324/xerusime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f87f2d8dc84b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f875ca4c60a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5f8df6d84fde2.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/1/0428/8266/2553/files/memoxabifiwimusegar.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/beroliwujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9445/1387/files/chery_eastar_2.0_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc19f29-f6ad-4cab-8a86-946c171c79b0/mercedes_2010_c350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1054/1726/files/jupeso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d39ea606-152b-4130-9638-8fc7a4d7e10e/52258611270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/peshitta_old_testament.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67383b6a-0d25-4808-a8af-958108ae797b/36690310797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2492/2786/files/acids_and_alkalis_worksheet.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_off00005911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5911 5264 bytes
SHA-256: fda03cef3de7d7ec9eaa8c399f2c3e79cd690b0b2efa9d5370e5b507cc2b71ab
font_01_sfnt_off00006ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD3 10136 bytes
SHA-256: 3e8bdcc110089dbff54fa3457b9d90667911db9fa88e2fa42db29e9a758855a4