Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fb45424f164df49…

MALICIOUS

PDF

85.9 KB Created: 2020-08-27 21:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b40f3d54d3994c3c1c765b2d282dcd8 SHA-1: 64cb4af4b6cb90d7de217dd808a96c7861468394 SHA-256: 4fb45424f164df496f10d946e6674e5d854d57f48b2776826439278f292fbf68
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary malicious redirector URL embedded. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/pify?keyword=mauser+98+identification+guide directs to known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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.com/pify?keyword=mauser+98+identification+guide
    • http://files.znnphotography.com/uploads/1/3/0/8/130814855/2581996.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/87897826843.pdf
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/39430276594.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/56183195549.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/dulinevelozotutazupepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/69277161858.pdf
    • https://cdn.shopify.com/s/files/1/0435/7488/6563/files/solstices_and_equinoxes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/54899194621.pdf
    • https://cdn.shopify.com/s/files/1/0432/6811/2550/files/24910079877.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/26569317570.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/58262727145.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f170.bin
e76c7bda9754e136b8495d0eec470c6e9362ddd5d1a7227320d8de0d9a0fe97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF170 5512 bytes
font_01_sfnt_off00010439.bin
47d5023d0326d403d2e721bf47b54e9e5f8c08179235fef3a4ab138c043eeaa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10439 16024 bytes
font_02_sfnt_off000135d1.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135D1 16060 bytes

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