Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d74a55a9bb7392…

MALICIOUS

PDF

35.7 KB Created: 2020-08-04 18:52:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d28da6e0d15812f71e4aa008dce167b SHA-1: 2bfcbedba8a654b60081a9e9df07b00feab3d943 SHA-256: d9d74a55a9bb7392bab1156723872553f0185ca10c501cd191a7215b71601ddc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify domains, but one critical link to `ttraff.cc` which is flagged as a malicious redirector. The document body text, though partially corrupted, includes the phrase 'Birth certificate correction form pdf kerala' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous PDF links indicates a likely attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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=birth+certificate+correction+form+pdf+kerala
    • http://files.eastshorecf.com/uploads/1/3/1/4/131407705/lanaj.pdf
    • http://files.team-tubes.com/uploads/1/3/1/1/131164272/1306239.pdf
    • http://files.activecare.co.nz/uploads/1/3/0/7/130740175/9983594.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/33337711215.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/70994233707.pdf
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/pijeterir.pdf
    • https://cdn.shopify.com/s/files/1/0437/2597/9813/files/zukugexon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/9038719087.pdf
    • https://cdn.shopify.com/s/files/1/0445/6385/7572/files/one_more_night_busy_signal.pdf
    • https://cdn.shopify.com/s/files/1/0432/0369/0660/files/materials_engineering_science_processing_and_design.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31240515614.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/73399327257.pdf
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/woviwipepusine.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/kedinosafikibozo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/24810377138.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_off00004ead.bin
1be93258cbf8466023052b11ffe1066f528466d63e2b4a8c87dc2d27d6251a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EAD 5332 bytes
font_01_sfnt_off000060a7.bin
282eb0f45ebd6e5890408261e60da43bca9c4f298118619c1c0bdeee86a4beee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 9740 bytes

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