Malicious PDF — malware analysis report

Static analysis result for SHA-256 94567033191d0159…

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 10:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c0271c82c9165fe1e275e8eb7c6776 SHA-1: 91dcbe76d6d3c02531d71251029f84f11ff3a049 SHA-256: 94567033191d0159631721f82c9230789a8cc88a3351b5ffb87ff70bfb04c0fa
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=anxiety+management+worksheets+for+ad'. This URL is embedded within the document body, suggesting a lure to trick the user into clicking it. The document also contains a large number of embedded links, flagged as a PDF SEO link farm, which is a common tactic for distributing malicious content or conducting phishing campaigns. The presence of these links and the redirector strongly indicates an attempt to lead the user to a malicious site.

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=anxiety+management+worksheets+for+ad
    • https://static.usrfiles.com/ugd/34e21e_18492d604a8448e1a1ae4edea6327e3f.pdf
    • https://static.usrfiles.com/ugd/fa32a6_08e46d25c2f4472f83fedd5a663806d8.pdf
    • https://static.usrfiles.com/ugd/defdb4_912700522e354072855b8789b3e4a21f.pdf
    • https://static.usrfiles.com/ugd/353d00_abdeb51f4a52461dafbef64f8336938c.pdf
    • https://static.usrfiles.com/ugd/217d68_206638e8238f4d0a96786c08f18497af.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruxejuvekega.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2597/files/mivemesitoxezez.pdf
    • https://cdn.shopify.com/s/files/1/0431/6374/6466/files/gokokix.pdf
    • https://cdn.shopify.com/s/files/1/0432/3655/6962/files/22578891855.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/49878308119.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/rutamamogoki.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/78780876197.pdf
    • https://cdn.shopify.com/s/files/1/0435/8609/3214/files/betawa.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_off0000660a.bin
cce1512823092d8e8b67e47cf4888add5e331ae6477b0975de522f376cf4b563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660A 5604 bytes
font_01_sfnt_off000078fe.bin
82fff6218cf4b34256db080f90a95a5c168b27ff8efc15bd96e38efdbf3fe29d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FE 10360 bytes

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