Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2e45edd22d7a6c…

MALICIOUS

PDF

66.4 KB Created: 2020-08-30 20:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c494bb0b4d7d142440bed727e0e0e91 SHA-1: de609c646f0344601df11c0eb09ffa05e9cb4a3d SHA-256: 3e2e45edd22d7a6c4bcfc006a68de3aa5e4c3a135bb84419841bd76374e4d393
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=guitar+tune+chart', which is flagged as malicious. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to create a link farm for SEO manipulation or to obscure the malicious redirector.

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=guitar+tune+chart
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/61347944024.pdf
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/28508027451.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/99600134620.pdf
    • https://static.usrfiles.com/ugd/c3548c_6395f1e5e9734c7cb5abde0a1d79357a.pdf
    • https://static.usrfiles.com/ugd/b8c837_779f679d34cc4bf49bc449e7b4a11641.pdf
    • https://static.usrfiles.com/ugd/5be868_f09c5d58636f4dad91f7b4d45a83a2c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c01422732884498805870ffeabb6661.pdf
    • https://static.usrfiles.com/ugd/22739b_d2bd603415e5481eab7bccb92a526fb8.pdf
    • https://static.usrfiles.com/ugd/9e14ca_4f3ae1e9f07d40b6ac342388e68bb199.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8d5142e7c894a51bdee1eaed8d5c0eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_36015bfecebd4de887802a544476f7cb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab94.bin
78988014e6969ff68d16c34722539e073b066a96f845b0304e385d1ac09db397		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB94 4708 bytes
font_01_sfnt_off0000bb8b.bin
e9737255df2fd97482ccf25d49fc67d4e7f0d4201f96cb5b67269196eebaa781		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8B 13724 bytes
font_02_sfnt_off0000e7a4.bin
15a68420f1c377824b8c1fd571ac7c30556db1b4bc05006bf44ec3f6c6c83208		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A4 16120 bytes

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