Malicious PDF — malware analysis report

Static analysis result for SHA-256 e13445d110955e0d…

MALICIOUS

PDF

38.2 KB Created: 2020-08-31 05:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae50e379e3974d733ce0f4e9258ad52d SHA-1: a4cc2569c88372d9bb40f6737b92ce820b3871bc SHA-256: e13445d110955e0d2d549d0779227e818c2af3d64317de24f557dd6b209a7c9a
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=descarregar+discografia+completa+de'. The document body, though heavily obfuscated, also contains this URL. This indicates the primary intent is to redirect the user to a malicious site. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 2

  • 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.
  • 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/wix?keyword=descarregar+discografia+completa+de
    • https://static.usrfiles.com/ugd/b8c837_4d77737b94d848dcb854940b484f6258.pdf
    • https://static.usrfiles.com/ugd/696117_3cbd1b4d2f3c4da294405d6fcdb8ea77.pdf
    • https://static.usrfiles.com/ugd/3e9e83_2f689e290bd54a2d9964c4735d7491d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4241ec326ec442ea865977467cb768c.pdf
    • https://cdn.shopify.com/s/files/1/0428/2934/9030/files/62730331193.pdf
    • https://cdn.shopify.com/s/files/1/0462/3869/5573/files/77997933054.pdf
    • https://static.usrfiles.com/ugd/cfa91a_f2e7cdd03f6b495c9cdb4adff7f8be1c.pdf
    • https://static.usrfiles.com/ugd/99965f_d42544483ea741ecb1cbbdb1a73720e8.pdf
    • https://static.usrfiles.com/ugd/01e791_9699ecacbba44f6d8649bff35fb238e4.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005613.bin
6775e0b30aeac20483aa07cb6a28687653a21de5bd6c8ca944c1f5cb95cd4543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5613 5476 bytes
font_01_sfnt_off00006897.bin
6628e3bc8293743dd9fd7311c76d2d3271d4ae80d48798a12b3cd73968cdeaf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6897 10476 bytes

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