Malicious PDF — malware analysis report

Static analysis result for SHA-256 482bfcdc4212d27a…

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 19:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c67c18b93df50a4dfda2b2c726c30dc SHA-1: dafdcf410b17e356878c9269dd90ba193b9786da SHA-256: 482bfcdc4212d27a2a3d46930966025c6891d13c4f085d7ac178fd0d0f2b62e7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The embedded URL https://ttraff.com/wix?keyword=civil+fe+review+manual is the primary indicator of this malicious redirection. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, suggesting a link farm or redirection tactic. No scripts were extracted from this sample.

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=civil+fe+review+manual
    • https://static.usrfiles.com/ugd/b91566_0796b442654e4e8bac0784886b3d83c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b66c7751e714042a13b12e666979b85.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_5965df035bc94e07b8d86a157af58283.pdf
    • https://static.usrfiles.com/ugd/f459ea_b1ce79e228fd4099b7897ba339da792d.pdf
    • https://cdn.shopify.com/s/files/1/0449/8613/8792/files/contractual_joint_venture_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/75069465090.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf2b371bcc72483caeeb6e56aeef2e0a.pdf
    • https://static.usrfiles.com/ugd/77941b_37fa6c29f1b54069b86f6615f46301f8.pdf
    • https://static.usrfiles.com/ugd/f4de5e_b01c631fc8e84383a39cc39b9d84ae65.pdf
    • https://static.usrfiles.com/ugd/b8c837_7245456b1c484ab19fe5659808f55a88.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a157940a3f544febec2083513d0072b.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_off00005d3d.bin
7e4becd70684eb13c324385c5b66fff07b178c7d0c478503dc46cf85a9312c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3D 4792 bytes
font_01_sfnt_off00006d83.bin
6d3d190ddc27f31fd3f8b61d7e81dfc732de818ee19ade0dce390c3ab99560a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D83 11056 bytes

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