Malicious PDF — malware analysis report

Static analysis result for SHA-256 06943296c21907ba…

MALICIOUS

PDF

40.4 KB Created: 2020-11-02 15:19:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 617d5b432bb7794c47866e41db2a3e3b SHA-1: 7f23124b673b3828d459c40d415d34ecd3b9170b SHA-256: 06943296c21907ba7d88e1924ffea0e9800c45a5881e0b760eafe404c42b978c
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The embedded link is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

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/strik?keyword=mutual+agreement+to+arbitrate+claims+meaning In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386837/normal_5f936087dbec5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5f8877d68e85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f875b143e20e.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/7654695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f882c673fa76.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/92aa1.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.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/58638906-a678-490b-8cda-bbf88c99ba3d/short_by_holly_goldberg_sloan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf9e2fba-fa13-48e1-a64a-d6491c629964/lafiposad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7713d03-ec38-4911-82f8-dd60c71b43c6/sinipizixipegerol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9821/7378/files/akg_k240_headphones_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72435c3e-6cf7-4c4e-b4b3-6d2c543b10f3/juxepuzunesole.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_off00006172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6172 5264 bytes
SHA-256: 3729926e9da3691ca5d1633130a0398a90c2d25a4dc48748ae0f3cf82e528e8e
font_01_sfnt_off0000734e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734E 9800 bytes
SHA-256: 255ae6d251d537eea01904ffb23b65b15c869db79e72b4a19842e96659994f0a