Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d94b9f75ce8980…

MALICIOUS

PDF

49.6 KB Created: 2020-08-02 13:26:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 627136edec2808341f7680412674a567 SHA-1: 37ddb5f5852fb0d2f3d3caf220db28a2fc4485dd SHA-256: e5d94b9f75ce89809ea2e41a2f23c93545f4aa76dce5266ccd437600bd617182
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents. One of these URLs, 'https://ttraff.cc/pify?keyword=classic+fury+warrior+bis', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a deliberate attempt to lure users to malicious infrastructure. The primary goal appears to be SEO manipulation or distributing malicious content through a network of linked PDFs.

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.cc/pify?keyword=classic+fury+warrior+bis
    • http://files.jasminkwan.com/uploads/1/3/1/4/131453248/kubomerebamel.pdf
    • http://files.275athletics.org/uploads/1/3/1/3/131381772/dafozin.pdf
    • http://files.essentiallyempoweredwellness.com/uploads/1/3/0/9/130969954/8067831.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/dinip.pdf
    • https://cdn.shopify.com/s/files/1/0432/3439/4276/files/90630428307.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/difajabes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/88054248478.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/17180033859.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/15894794906.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/kaxuriziputew.pdf
    • https://cdn.shopify.com/s/files/1/0437/2401/3722/files/40978921845.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/40696750961.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/18617891656.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/vebafon.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_off000079f7.bin
731e1a898757bc1b112058c694f2e34871231534c2b056dc3b63b34979858a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F7 5116 bytes
font_01_sfnt_off00008b82.bin
bf28f482352f3e232e71d18791f8b501d3c5487e48fe62c8b14ccb7e07978cc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B82 14756 bytes

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