Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2a82e2864b473f…

MALICIOUS

PDF

35.5 KB Created: 2020-09-05 21:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90f1118ef8ce72e1fffefb641ae8f616 SHA-1: c6996e280a1105310cac4e3074beb6d8f57ab4bc SHA-256: 3a2a82e2864b473faa926c4911667f1ecee54ea207e3f08e33de40f9d7034633
60 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.me/wix?keyword=dise%25C3%25B1o+de+cubiertas+metalicas+pdf'. The document body, though partially corrupted, also contains this URL, suggesting it's the primary lure. The file is generated by wkhtmltopdf, a tool often used to create PDFs from web content, which may have been used here to package the malicious link.

Heuristics 2

  • 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.
  • 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.me/wix?keyword=dise%25C3%25B1o+de+cubiertas+metalicas+pdf
    • https://static.usrfiles.com/ugd/95bb70_57753e87e5844f7dbb484a92fa3721b3.pdf
    • https://static.usrfiles.com/ugd/71fd01_b3b1e0b4e1eb4ff19e26e6ab00203b93.pdf
    • https://static.usrfiles.com/ugd/c7a620_21cb4747532447579909b484babad91b.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/21617721958.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/karafukenurojakezawobuxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/36294982268.pdf
    • https://static.usrfiles.com/ugd/9c0842_5059485b17fc4f5caeff43449ce0d2be.pdf
    • https://static.usrfiles.com/ugd/b8c837_47a6162826154e11a013bc4bea100920.pdf
    • https://static.usrfiles.com/ugd/ef7b09_85e67dd141cc4392a77e0bd1b45ae678.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_off00003e17.bin
c332b150d36d19e5a69e3b4d4fb7e8b04d8ef9da0392003817cc4be5783a5097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E17 5428 bytes
font_01_sfnt_off00005062.bin
03c960a3318909c383a8c192153e99ef7c44789a28931021b7955165e8b6b609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5062 10036 bytes
font_02_sfnt_off0000716c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x716C 4324 bytes

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