Malicious PDF — malware analysis report

Static analysis result for SHA-256 813b697aa4eac81e…

MALICIOUS

PDF

48.5 KB Created: 2020-08-31 13:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fe4785222804670066b5944339111c2 SHA-1: 28ade8eb65eaf9663c29a86bd483d4406098a694 SHA-256: 813b697aa4eac81eed87ed95050066a7b8785fe863fa105fa3dfce8d470256bf
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a product advertisement for a North Face jacket. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.cc/wix?keyword=north+face+fuseform+brigandine+3l+jacket.

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=north+face+fuseform+brigandine+3l+jacket
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/bubekizowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/drake_6pm_in_new_york_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/pudagediratelobiloladix.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/exam_cram_70-642.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/affairs_cloud_july_2020.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/mopirome.pdf
    • https://static.usrfiles.com/ugd/16a96a_e5ec99eecc11434ea2292dcb9abd4dc7.pdf
    • https://static.usrfiles.com/ugd/b8c837_0250e583e02144f7924434c2d26d83b8.pdf
    • https://static.usrfiles.com/ugd/d2751c_a798b74f9e6f44e7b305d09b6e607d6b.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf3e10c080e9492e8cd5ef00654012a3.pdf
    • https://static.usrfiles.com/ugd/e42ee3_76bf09f5afaa4171b4801cdfc47357b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_005882a4fa324a5691640cd1ef84b234.pdf
    • https://static.usrfiles.com/ugd/735189_402e306453844cd0a46037964d61e7d2.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_off00007b8b.bin
281bc4824b4d0e37cb91f3a9f9c4a58feb8423da375faafa192e3710970bf3f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8B 5848 bytes
font_01_sfnt_off00008f54.bin
a3bc915e83e54b713d03cc9fce1625be543a0d60a70b7197d43f5fa023a0af60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F54 11052 bytes

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