Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3757de90cf994c4…

MALICIOUS

PDF

40.8 KB Created: 2020-09-01 13:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d1b1a211dacd12b87e28953b5f86882 SHA-1: e122fb8879d1cf7a24760abe20e39d73c157ce8c SHA-256: e3757de90cf994c4aafc4ae52188c5ac1156bb320c85e55c83f0009ee1a7acb9
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=hypertension+guidelines+jnc+2018'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, also contains the same malicious URL, reinforcing the intent to redirect users to potentially harmful content.

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=hypertension+guidelines+jnc+2018
    • https://static.usrfiles.com/ugd/10e3af_0cd835201aec453089fdc80252716721.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_9c746c6435ec4deda19984936f2a7db0.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9c380340e674d38b7994a786f2529dd.pdf
    • https://static.usrfiles.com/ugd/003b86_db396192e457448ea3fb5cddc36bc4f0.pdf
    • https://static.usrfiles.com/ugd/0bcf16_70bf7ff6d2a240d7b2c82575f3543789.pdf
    • https://cdn.shopify.com/s/files/1/0463/2533/4171/files/advanced_grapher_2._2_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/4094/5829/files/domifaz.pdf
    • https://static.usrfiles.com/ugd/b56239_1e4cf4fc21da476f84566c5b86d54d80.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3bcece0ea7d4d40863468a3da084ff0.pdf
    • https://static.usrfiles.com/ugd/43d598_ee71ec316eca40e09044a0ca12790a50.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_off000060bf.bin
fc5fa18c3b229b6a75ebe0803c46eb355111e24327097f30f974b172744a0b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BF 5688 bytes
font_01_sfnt_off0000744b.bin
01d4cd9aa13b9064ce9143f2fd980d80571979e4b8aafe3e7386270b1f6c9c8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744B 10156 bytes

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