Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d86a674db44e1c…

MALICIOUS

PDF

47.1 KB Created: 2020-08-26 04:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7db5e4ef983abd3d5c61e627ed4c09d6 SHA-1: 3a425457b5c998a614ad1e7ff01b46d2e6b703b6 SHA-256: 45d86a674db44e1c4efb26ef2f739fde3ba5ab7af3349ce033b8549210ccf8a0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=skyrim+vampire+bite+attack', is flagged as malicious, indicating a redirection to harmful content. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking Shopify URLs, suggesting a coordinated effort to distribute malicious links.

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=skyrim+vampire+bite+attack
    • http://vadutizes.doubledekehockey.com/uploads/1/3/1/4/131437626/wabogesaxulekax.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/flower_drawing_step_by_step.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6528/files/54575896314.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84860081798.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/54183247138.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/adobe_reader_pro_xi_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/4390/3905/files/casper_apk_2018.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/1831450880.pdf
    • https://cdn.shopify.com/s/files/1/0437/2889/6161/files/docker_for_windows_10_without_login.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/los_anunnaki_creadores_de_la_humanidad_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • 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_off00007a67.bin
67452554bf57b7cebdb2dd2d86aa0d66121ddfd2e35c67d63da34b41cf3388b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A67 5336 bytes
font_01_sfnt_off00008c7e.bin
5c82b785a8e19388cdf3247005a4fdf55611e2222d945ef712d480c54fd72a0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7E 10404 bytes

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