Malicious PDF — malware analysis report

Static analysis result for SHA-256 9468b8c4a579cb30…

MALICIOUS

PDF

35.4 KB Created: 2020-08-31 06:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c978acd682d19ce814ed6871a854878 SHA-1: 97a50516440674f92d56c5b157cf650d680d00aa SHA-256: 9468b8c4a579cb303feebc2e3146c6fb7a88585e92929bd504befe16f166c92d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that appears to be part of a link farm designed for SEO manipulation, likely to obscure the malicious destination. The primary malicious URL is ttraff.ru, which is used to redirect users to potentially harmful content, disguised as product instructions.

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=avent+naturally+express+bottle+sterilizer+instructions
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/pumijeporepajilaguvasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/ergonomic_design_of_control_centres.pdf
    • https://cdn.shopify.com/s/files/1/0439/2353/8088/files/49910869696.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/96940557167.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/komuwuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/25922867587.pdf
    • https://cdn.shopify.com/s/files/1/0431/8294/8506/files/dogeriro.pdf
    • https://cdn.shopify.com/s/files/1/0438/2470/9782/files/dukojeledoposedib.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/inform_educate_entertain.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/jurassic_world_evolution.pdf
    • https://cdn.shopify.com/s/files/1/0460/1508/6759/files/38997375705.pdf
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/strategyzer_ad-_lib_value_proposition_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/pibol.pdf
    • https://static.usrfiles.com/ugd/9b33c5_40b798050e6e40189ed5197a6c88a823.pdf
    • https://static.usrfiles.com/ugd/51c472_ffe0f1cb99a94969be98e48f1827b086.pdf
    • https://static.usrfiles.com/ugd/9757e7_10368522359f461297895a4d19c4c37e.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_off00004da1.bin
fb5e4fe666a0d14fab28d389bcb009aecba0e22dac29d63e9f6f99bcb2cef2a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DA1 5336 bytes
font_01_sfnt_off00005fe0.bin
3921c2ec7cee28ae48e7a96873f23ce2a7f1898f7f51b432717689c36f0b0fab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE0 9560 bytes

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