Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebe04e924e430bf…

MALICIOUS

PDF

44.7 KB Created: 2020-09-08 14:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60c6efba15ef47608a1b8165d43d218f SHA-1: f7a50d374c38116693b6ab060e6e1d5e21b8cd62 SHA-256: 9ebe04e924e430bf74e3dff158781417a7862f7e471cddc38b65ac0ee1a9f72a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=wayback+machine+website+er'. Additionally, it exhibits a PDF link farm pattern, with numerous links to external PDFs, including 'https://static.usrfiles.com/ugd/253000_8ad751190fc74a7fa528828922ab95de.pdf'. The document body, though heavily obfuscated, also contains these URLs, suggesting a lure to external malicious 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.me/wix?keyword=wayback+machine+website+er
    • https://static.usrfiles.com/ugd/253000_8ad751190fc74a7fa528828922ab95de.pdf
    • https://static.usrfiles.com/ugd/227d0f_1e085ba8c8884a84a5a969cbb367d955.pdf
    • https://static.usrfiles.com/ugd/9219f8_d142f568b03a4d9e83f8730792baef77.pdf
    • https://static.usrfiles.com/ugd/64bd79_dcc9c3c6a31940bba0abe3e193ee07a7.pdf
    • https://static.usrfiles.com/ugd/0e6328_2da79ca44da74251916e520f4719df2a.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/93597014027.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/upgrade_firmware_mxq_4k.pdf
    • https://cdn.shopify.com/s/files/1/0430/7841/8583/files/safimubodujumapagitamov.pdf
    • https://static.usrfiles.com/ugd/2dbf5a_1fa4d0b055434f5ebe124383d505ec29.pdf
    • https://static.usrfiles.com/ugd/bb4607_a336f46f13e94e69b89eef13cd432ce3.pdf
    • https://static.usrfiles.com/ugd/ab5adf_4a455d9c60844c23844b7473547cf821.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a260537d8644b40bfbab4801e197c7f.pdf
    • https://static.usrfiles.com/ugd/6e13d9_354a3631018340689ab3e6a95c2739ff.pdf
    • https://static.usrfiles.com/ugd/0dd040_68e5e0bcde644cee92c0134dc5aedd9d.pdf
    • https://static.usrfiles.com/ugd/f2ef67_5174a59b511c49e6be7f031b12353595.pdf
    • https://static.usrfiles.com/ugd/b8c837_820a5227004c441c8dc8a2499c615489.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000581a.bin
5a89847d8c1aa536d7407e47b8eeca32d09143f4060ddaddbcc89f5b5c105ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x581A 5420 bytes
font_01_sfnt_off00006a76.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 1800 bytes
font_02_sfnt_off000072f9.bin
488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 6148 bytes
font_03_sfnt_off000082d9.bin
e41562911b5a2dc2dd8e1bcadbc36a96dcb66616e0e8d1a32ad0d7354d7d1133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D9 10012 bytes

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