Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b3eec68a297dd7…

MALICIOUS

PDF

46.7 KB Created: 2020-08-25 06:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f9d949dc75262098ff2a82ff8c0f1a7 SHA-1: b6ebf26fcc959e8e600fb560a92151d404639894 SHA-256: c2b3eec68a297dd7706ad9b7b76f4d85437107cc82dcbd383a67994e52a63161
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO abuse. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. While the document body is heavily obfuscated, the presence of these links strongly indicates a malicious intent, likely to lead users to further malicious content or phishing sites.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.ru/pify?keyword=cavallino+treporti+eventi
    • http://difunipud.nsjp.biz/uploads/1/3/0/9/130969972/fosomimelowazor-memade.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/zoritekiwanitewijojufeve.pdf
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/ivan_vasilievich_back_to_the_future.pdf
    • https://cdn.shopify.com/s/files/1/0435/2793/0011/files/xoresokomotumerapajofujem.pdf
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/72944183392.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/90263660248.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/vawukoxoradojesekeferazo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/sheet_metal_gauge_thickness_in_thousandths.pdf
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/duvogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0949/files/1461320059.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/nerugakejexobi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7763/9075/files/lerufafezofutokapojijurep.pdf
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/44372752630.pdf
    • https://cdn.shopify.com/s/files/1/0435/8845/2515/files/lung_cancer_pathology.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/nurotovobodesi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0435/2

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e85.bin
32de9e09a7001856c8411e1e1abe491d25d769912c6e1a1f2b4e142a6c087ba1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E85 4504 bytes
font_01_sfnt_off00007de1.bin
5fdad04851c138e0b096cac0f9ecd98d0b75e13abf02f31a63624121fd896332
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 9920 bytes
font_02_sfnt_off00009fca.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCA 4324 bytes