Malicious PDF — malware analysis report

Static analysis result for SHA-256 c862ef1cd277a23c…

MALICIOUS

PDF

47.7 KB Created: 2020-11-03 18:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c019e864a79d4630a1a8fa4dcf4e94d0 SHA-1: 00bea0be1a7e22df69792702ad26513eed9a0755 SHA-256: c862ef1cd277a23c35ab6e4682478fd829a5b2f5bc16aaff5c3dfef00db50880
94 Risk Score

Malware Insights

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

This PDF document contains a link disguised as a product listing for a Sony camera, which redirects to a known malicious URL. The ML classifier strongly indicated maliciousness, and the embedded link is a primary indicator of a phishing or redirection attempt. No scripts were extracted, but the presence of a malicious redirector URL is sufficient to classify this as a malicious document, likely intended 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/wb?keyword=sony%20cyber%20shot%2014%201%20megapixels In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5f8e78297c2cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_5f96c4e1daf96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376874/normal_5f9dfadecc0a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407100/normal_5f9f3b7d213cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5f889e56e4040.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/46c0bce5-6708-4f41-8e9d-f4ae88f43e7d/35133729776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7717e595-8932-4252-b8aa-b8a5a5f29beb/proyecto_de_un_centro_de_computo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b21e771-75bc-4e2b-b81b-c91afc4e2dba/pomufozilesadutaravazixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e2c373-e609-440d-ab5c-c987e77d4102/87743943972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa04749b-fb9f-487b-99b7-1adc8dbf36db/kuzadifoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99c73511-be35-4f2a-ac40-97d61d14fd59/90515317208.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_off000076d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D8 5900 bytes
SHA-256: f8db10f9eb1ff89c6793f3717868cef49841e12f424161480f3bad6de741d874
font_01_sfnt_off00008ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE0 11440 bytes
SHA-256: 5d6c598a1a7b270a8938f2c2dd455d8581a966a280f22afda6cd37550d0dbe56