Malicious PDF — malware analysis report

Static analysis result for SHA-256 37232013c229e9e7…

MALICIOUS

PDF

49.7 KB Created: 2020-09-07 13:26:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12e2bdfca2f7d9adf97c45369ce72c23 SHA-1: 6a97988cef663a71cf22e4173c15280b71b94aef SHA-256: 37232013c229e9e795689a6f34e9266ec5d987d529349ad5fe32fcac99d5f7ed
160 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector, indicating a social engineering attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=soda+pdf+chrome+extension', which is also flagged as a malicious redirector. This suggests the document's primary purpose is to trick the user into visiting this URL, likely to download a malicious browser extension or initiate a further exploit.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=soda+pdf+chrome+extension
    • https://cdn.shopify.com/s/files/1/0430/8844/5589/files/adobe_animate_cc_2019_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/31167464517.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/55153918531.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/97422706187.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87899810879.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/konaviwoxizogalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/tirogigo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5288/2330/files/nexowibixejomofowepata.pdf
    • https://static.usrfiles.com/ugd/c12414_cbc926bd631841588b3189d1828562d4.pdf
    • https://static.usrfiles.com/ugd/5ea4d5_538872a3366446f3874daf365f13f6ac.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_e9067c16b246497c911334642f78ae43.pdf
    • https://static.usrfiles.com/ugd/8b2c09_52dface5e6f34a96afb41c19490ad316.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_off0000827d.bin
06b8e118d7cb01e49af8907ea5e2ef29f9d106cf4e01ebc3822b99ecd389276b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827D 5536 bytes
font_01_sfnt_off0000952d.bin
dea1fdbc5bf5c2cfeb055f92d33087362b560c369a231da783a74fc6d21dc471		 pdf-font-stream PDF embedded font (sfnt) at offset 0x952D 10780 bytes

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