Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb9644a2d65d257f…

MALICIOUS

PDF

122.0 KB Created: 2020-08-31 13:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 727aec89599265cf54065b85dce59b93 SHA-1: 499524e14418a1672f92660eb3977cb21718be3a SHA-256: cb9644a2d65d257f545f0037203da5a65c3d26105a1739af6ace7a735bc94657
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=transformers+robots+in+disguise+female+autobots'. This indicates a social engineering lure designed to trick users into visiting a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as the primary attack vector. The presence of numerous other PDF links, while some are benign, suggests a link farm strategy to obscure the malicious destination.

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/wix?keyword=transformers+robots+in+disguise+female+autobots
    • https://cdn.shopify.com/s/files/1/0433/8181/7495/files/the_flash_barry_allen_comics.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/pikawegimuziwamoxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8244/9045/files/strong_invigoration_draught_code.pdf
    • https://static.usrfiles.com/ugd/769f78_8d86554b3a5446408c72cfff94f91409.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f600633f2ff4fc5b198964fd0905691.pdf
    • https://static.usrfiles.com/ugd/58a813_47886ba9d10a4b70b439f3ab1feb71ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_f9041e3a4ecf47f2bb1f5f26774a73c0.pdf
    • https://static.usrfiles.com/ugd/e3834b_e994869793a441049fe6f3e7d1b56a71.pdf
    • https://static.usrfiles.com/ugd/4d400c_9fd3795e309948a6935cdac1b47688dd.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_d2c9bd4df42a4b458b7b051ecf8ad4c8.pdf
    • https://static.usrfiles.com/ugd/60933b_47c82c06538448beb9b4bb26c5386e8c.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_off0001990b.bin
67c5a3ab957945bc7ce83013359a3817245f31fbc4c4449c916907e8342ed4bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1990B 5316 bytes
font_01_sfnt_off0001ab04.bin
155b44e63e93a4eaeba0d59e9ce8b48268d5659352536c2b10062a9382b438aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB04 15216 bytes

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