Malicious PDF — malware analysis report

Static analysis result for SHA-256 45031348cff723be…

MALICIOUS

PDF

34.5 KB Created: 2020-08-29 17:37:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52cb514c14e5df61ba283294a2f34fb9 SHA-1: 5e3ea13b826e2955f26c2a9a5514bde155d3dfae SHA-256: 45031348cff723be909805c6798c0ebe6ccf666d002d7569a81df955140a69f3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=catalogo+lusac+2018'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with a significant portion hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking PDF links, suggesting a deceptive lure. 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=catalogo+lusac+2018
    • https://static.usrfiles.com/ugd/b8c837_7f27948d92674af8a24dc4212ef7c3e4.pdf
    • https://static.usrfiles.com/ugd/63d3ad_41834d9f7cd74a55918dec267a936142.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8114a186a0f467eb8acf6104cdf8c58.pdf
    • https://static.usrfiles.com/ugd/36f25b_cb6f94f43db64f5fa0b6ea0caf67809d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4c465ee7e6a408c8d8be83b0200bc22.pdf
    • https://static.usrfiles.com/ugd/b52961_3bb1a1044a87425a88e9b69376c1124c.pdf
    • https://static.usrfiles.com/ugd/a18aa6_7a1878e0409b4c1eb117ea5be66e1172.pdf
    • https://static.usrfiles.com/ugd/b8c837_13a0358859d044d782ac0944d6d449db.pdf
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/canon_vixia_hf_g40.pdf
    • https://cdn.shopify.com/s/files/1/0445/9390/5828/files/agile_testing_process.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/rukokaxekegaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/fishing_report_greers_ferry_lake_ar.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_off00004a73.bin
95931103e9f5b4b40d30a622c16746ac94a78b1d7fb2dc44a22014c984df8710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A73 5296 bytes
font_01_sfnt_off00005c8d.bin
bd0cc99e02a06b562703981f121ff45cc1c1151ba28616146fd7c9e68012eec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8D 9740 bytes

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