Malicious PDF — malware analysis report

Static analysis result for SHA-256 956e0a15cfc60ccb…

MALICIOUS

PDF

42.4 KB Created: 2020-09-07 12:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6470772dde5fe634546b8f996f4b9b1b SHA-1: db352b944f4ae12c48af3d50cfae6d533bc4aafd SHA-256: 956e0a15cfc60ccb460073d908f241e56eaabe6d6e3bbbfee26e35951c9b0271
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=free+buildbox+template'. This indicates the document is designed to redirect users to a potentially harmful destination. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, with the primary one leading to a Shopify-hosted PDF. The document body, though heavily obfuscated, contains text related to 'free buildbox template', suggesting a lure to entice clicks on the malicious URL.

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.link/wix?keyword=free+buildbox+template
    • https://static.usrfiles.com/ugd/e3c460_f3220e85da8b449eb1d018976a19b06c.pdf
    • https://static.usrfiles.com/ugd/7b00a0_7e82b01758b149adb3c4b1bfb5f88572.pdf
    • https://static.usrfiles.com/ugd/866690_5505368b606646af9bb6681f33775287.pdf
    • https://static.usrfiles.com/ugd/b8c837_66e04090aa0b4d32b50ab3a6a798f051.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/begavalinuvuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/29353300012.pdf
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/business_vocabulary_in_use_upper_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/7625616578.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/24882815887.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_off00005bf6.bin
6fe904aaccd3b96ccbc2ffae891128c1f844834299f840d1bfc824abee812b28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 4868 bytes
font_01_sfnt_off00006c7d.bin
4cea8d2afec7820e32e4342efb64676c7ef006641d396cff48065d5b17910b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7D 10164 bytes
font_02_sfnt_off00008f34.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F34 4324 bytes

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