Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78e0f70d82bb69d…

MALICIOUS

PDF

42.8 KB Created: 2020-11-02 18:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 91937dfd32d99d2d09352c3bf5806c0e SHA-1: 10fc4edff844658909d4b34ec7b42fbe197a1099 SHA-256: c78e0f70d82bb69dff431840514eff6a21a0fd67f52a9ac4152b343c6217d91c
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. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt.

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/aws?keyword=atomic+structure+review+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_5f9bb4824ba2b.pdfIn PDF document text
    • https://fenawivo.weebly.com/uploads/1/3/4/0/134000055/vikiworuzag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387808/normal_5f94627ee10ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5f8b75566263f.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/doredezugebu.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/dobod-rifibadaveve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b4b7a55f-e5f9-43b0-a7a8-d1acddb670b1/rowukowejedeku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c957cc9-e69b-48da-8144-69ab65fa0b13/pnl_libros_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1899/9737/files/xonovamolufuroso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D9 4936 bytes
SHA-256: cdcf4114a04c6a1f897e3cb5bc1526fbaaf34dcd84e44de2c5822738b12e37d0
font_01_sfnt_off00006a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A97 11104 bytes
SHA-256: 070466012734b8a4f4ad50fd5f044ed36d445c09470a63b7c32918c7d4a3bc15
font_02_sfnt_off000090a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3