Malicious PDF — malware analysis report

Static analysis result for SHA-256 f264b2d172e6a40c…

MALICIOUS

PDF

64.8 KB Created: 2020-09-02 11:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff2cb67a0642c15b74cf094737587a8f SHA-1: e81211af7f07e4ecb78b8c269aa50bc458933762 SHA-256: f264b2d172e6a40cc6ce530c7b9d3c4aaa253f03e115b0221a12d8f4e2833109
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'rational choice theory book pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The file was generated by wkhtmltopdf, a tool often abused for creating malicious documents.

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.link/wix?keyword=rational+choice+theory+book+pdf
    • https://cdn.shopify.com/s/files/1/0439/5712/5278/files/android_pay_canada_td.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/30232110810.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/42719293723.pdf
    • https://static.usrfiles.com/ugd/f2c1dc_2f2567d02a4f4bc989ab3c61698bb9e6.pdf
    • https://static.usrfiles.com/ugd/10a4aa_d1a7f2a3ac494d4ea8290da4746ae635.pdf
    • https://cdn.shopify.com/s/files/1/0440/2341/4942/files/the_surge_cheat_engine.pdf
    • https://cdn.shopify.com/s/files/1/0431/9923/4203/files/cake_by_the_ocean_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/41013683580.pdf
    • https://static.usrfiles.com/ugd/b8c837_c70c5fef769446a9a699c2997dc841cc.pdf
    • https://static.usrfiles.com/ugd/fd7405_01684f8573074960afe31ee240ed4057.pdf
    • https://static.usrfiles.com/ugd/e0d0cf_0481bfd590ae4120ae4e6c190a975cfa.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_0f322c8dc2904d43ab22b579288bd0f9.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_off0000b114.bin
1cb07873c72d393b9fcd405ddfd9a7de80f8b42e4616f8b5600f60c94da22cd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB114 5376 bytes
font_01_sfnt_off0000c365.bin
641de2e9018ef1e91198de0ed19053d3e5f3f832bd14f4a6329d3c6f395849df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC365 15696 bytes

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