Malicious PDF — malware analysis report

Static analysis result for SHA-256 3864aae314f1d0bc…

MALICIOUS

PDF

68.6 KB Created: 2020-09-01 22:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b00fb517c8fc9d54f7d60611ec4151ad SHA-1: bd63c7a605538e4ddf9e7d6fdb50fd302cd510a2 SHA-256: 3864aae314f1d0bc00e7665f7b9b57ac928a96d8e526486cf411ad14f045a3c8
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=startup+pitch+template+ppt'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a lure to a malicious site under the guise of a startup pitch template.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=startup+pitch+template+ppt
    • https://cdn.shopify.com/s/files/1/0430/7710/7865/files/arinc_653.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/16138925689.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/38311146372.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/actualizar_app_android_studio.pdf
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/addition_worksheets_grade_5.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e93d89840cf44078ef163bb9027c5bd.pdf
    • https://static.usrfiles.com/ugd/b56239_843fe7985dc6421fbccb96859da8d0a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_c046e6c9db3f4ae79f7e44e1e978235e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e970a08bb34040f18b03cb4b73bfd364.pdf
    • https://cdn.shopify.com/s/files/1/0432/8728/1832/files/santa_biblia_de_jerusalen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70838758317.pdf
    • https://cdn.shopify.com/s/files/1/0450/3057/2190/files/rejuva.pdf
    • https://static.usrfiles.com/ugd/86319b_9f6c8d9727cc4b919cada62503374543.pdf
    • https://static.usrfiles.com/ugd/575fb0_f580698d6aea464a90eead06d15de566.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c118.bin
099d1a5a83013cde26ebdb09cdc40ab1d41e9c0cdb9ba40afd39f88a8fb07363		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC118 4764 bytes
font_01_sfnt_off0000d143.bin
4346f5e4bf4a87aa8fc878c493aa2da3719ad49c387f99599cc08f8c84a4a950		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD143 11668 bytes
font_02_sfnt_off0000f72a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF72A 4324 bytes

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