Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e144ddb1434bea…

MALICIOUS

PDF

45.0 KB Created: 2020-08-30 15:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 453c09c18e209f68a93257a54b3e0516 SHA-1: e8770f122a299db721ea20b001df4b2c4e4723cd SHA-256: e0e144ddb1434bea113627be9e9fc9072b7dd724a3205529586edb716f78ae95
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or phish users.

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.cc/wix?keyword=profesor+doctor+buruiana
    • https://static.usrfiles.com/ugd/b8c837_fc25a47a265146d5aba92136afab4e3e.pdf
    • https://static.usrfiles.com/ugd/55cc32_0bdec5886991418db6c1b03ae6470c60.pdf
    • https://static.usrfiles.com/ugd/b8c837_86e0a1df3c06419284ae1ae96e394199.pdf
    • https://static.usrfiles.com/ugd/d5cf39_1d4a5f03f5404f5dae80093dd53d9b78.pdf
    • https://static.usrfiles.com/ugd/9e53d4_ebe580b251794cb484430d145a614661.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdf
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/23994462311.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/nilipukizoda.pdf
    • https://cdn.shopify.com/s/files/1/0440/5831/2869/files/alloying_elements_in_steel.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/xalamepamiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/zobugad.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9991/files/fv_function_excel.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/ammyy_admin_software.pdf
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/30554002309.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_off0000711f.bin
b65a54a29b777e714f1bcc3382024b592d93b33fb1272ecd0fd397afbc544f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711F 5124 bytes
font_01_sfnt_off0000828b.bin
8ffef3fcb9fa701a2f049742577b19e1b374fbf7df788cb7199a39876b0db375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 10320 bytes

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