Malicious PDF — malware analysis report

Static analysis result for SHA-256 df81e5260ac1ac1b…

MALICIOUS

PDF

56.2 KB Created: 2020-09-02 02:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8278b86ee71f7adb747aee2d624551b4 SHA-1: f68d854ab9aa77d422e3d5ffceca6f8a702d8ade SHA-256: df81e5260ac1ac1bfd2c7dcc3023349da3dfef884d90a346c35ece2341cd6bf3
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 indicating a link farm. One of the primary links points to a known malicious redirector service, 'ttraff.ru', which likely serves to obscure the ultimate malicious destination. The document body itself is largely obfuscated but contains references to the 'Bodyguard series' and the redirector URL, suggesting a lure to entice users to click the 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/wix?keyword=bodyguard+series+all+episodes
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/kinusibo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0052/9049/files/gaxefomufokat.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/55033693263.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ae4f811cf4746fdb013b52745dcf53f.pdf
    • https://static.usrfiles.com/ugd/9ea91e_096dfda8ad254d59a968b72b8e8d3b61.pdf
    • https://static.usrfiles.com/ugd/1849a1_b68169172eda444abcb0b65157931a2d.pdf
    • https://static.usrfiles.com/ugd/3bcfef_d40ace9448b34722abaebca2a7e0f4c7.pdf
    • https://static.usrfiles.com/ugd/1cc777_27021b04fbdb4b7484b25345e2e93503.pdf
    • https://static.usrfiles.com/ugd/74e905_e2bc19afcd834754919e6fc071176769.pdf
    • https://static.usrfiles.com/ugd/b8c837_09afb7bc9c834125bc5547bdd4df0aea.pdf
    • https://static.usrfiles.com/ugd/95089d_f6ef6413deb84aad8da828e46387cd0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_424d2e06a9b944198bb36cef0e58beaf.pdf
    • https://static.usrfiles.com/ugd/516793_9b0232ce28a5469984e3b9ef3f0f371e.pdf
    • https://static.usrfiles.com/ugd/0d9a50_a162ec9ff29b439e9876b57613ecb098.pdf
    • https://static.usrfiles.com/ugd/b8c837_abb20bad16374a96ba6a072e9a25c470.pdf
    • https://static.usrfiles.com/ugd/71fd01_cc396b8e82e94d4eaa1deaabcb87de3d.pdf
    • https://static.usrfiles.com/ugd/041b56_ab757bc0d77a4890911d7c77e0ac07e2.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_off00009dbb.bin
c7d7f03bb4a5608ee69846ef13b610b6aacd15e1ab6bcdc5d7ba351337dc6e27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DBB 5280 bytes
font_01_sfnt_off0000afc9.bin
66f25b953eab4f48b1e48739044bb403538be291e10fe21df2d3194bc81eb687		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC9 10600 bytes

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