Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee2f15fc8bdcf6d…

MALICIOUS

PDF

51.8 KB Created: 2020-08-29 08:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 678bf8d7fcc20eab9e79daa2315c9c2f SHA-1: 829105e7f5ede7b0b52406fbca5a811160975866 SHA-256: fee2f15fc8bdcf6d0cac3635fb8042a1abc6e2eb28945e14954ca8eb6987e1e9
120 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=ceremony+silko+pdf+free'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, with a significant portion hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure to a potentially harmful site.

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=ceremony+silko+pdf+free
    • https://static.usrfiles.com/ugd/b8c837_44d1d516be284407893d7fb00f95a00c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4673dce8f7542ca9b8e42640f6dcc40.pdf
    • https://static.usrfiles.com/ugd/b8c837_2df67ebf33d145a4a7d7626fcc6d1c51.pdf
    • https://static.usrfiles.com/ugd/b8c837_abffd63dda0b4bf8ad2058abcf4aeb5a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/nesakujikiz.pdf
    • https://cdn.shopify.com/s/files/1/0458/1693/8662/files/foliage_report_bear_mountain_ny.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3fa0ae77c684d6c86a0dba9d025c331.pdf
    • https://static.usrfiles.com/ugd/b8c837_77151b43802844539594be89dd31bea9.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bdf47db0d9e40fb8e1f3dfd7efc3884.pdf
    • https://static.usrfiles.com/ugd/b8c837_115748a129394b8687d7017c60d30874.pdf
    • https://static.usrfiles.com/ugd/b8c837_a87f3a1e86b047a29fc930a9d4ecd5e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4331bf6850348ae97cdea7eee0664fe.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_off00008dda.bin
e50187f59483acc283eb1c59c70cf5f250309fe74d7810abefbfaba341423a60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 5048 bytes
font_01_sfnt_off00009ef6.bin
fbe48f7db36574fbcc4405455ab630b5a1922508b3ff9f8d4d9d34e7264b805b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF6 10468 bytes

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