Malicious PDF — malware analysis report

Static analysis result for SHA-256 2148e113a1552a92…

MALICIOUS

PDF

40.9 KB Created: 2020-09-04 07:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cd3f489292bf6fb4c784038b1705601 SHA-1: b172f9ef3f96eb17a1ea8dc75ee6e4fb43e4a0b3 SHA-256: 2148e113a1552a92c88b7fb7dd96a154bdb2a83adf9375308b925815c7d70307
160 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document's content and structure suggest a social engineering lure, prompting the user to install a browser extension or update to view content. The primary malicious URL identified is ttraff.me, which is likely used to redirect users to further malicious sites.

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=algebra+1+common+core+textbook+answers+pdf
    • https://static.usrfiles.com/ugd/b8c837_e0ec9d01b5224ac2b0db595c21313d7c.pdf
    • https://static.usrfiles.com/ugd/9a242c_fc7a48bd50f745fa8bf908c86dc047c4.pdf
    • https://static.usrfiles.com/ugd/48f461_de93b55635fc4f93809a16ba4edd986d.pdf
    • https://static.usrfiles.com/ugd/9c43ec_754b7b31544a454d94eadae1b8d338d9.pdf
    • https://static.usrfiles.com/ugd/8a9bcc_f6fb01d707f3455a87b7a77dff5decd0.pdf
    • https://static.usrfiles.com/ugd/5cf23b_2ff2c07c28574aafbb7b362c03c7bbaa.pdf
    • https://static.usrfiles.com/ugd/b8c837_cce7a4f23653497ebb1e0607be8b4cf1.pdf
    • https://static.usrfiles.com/ugd/9904c2_4e697785e9184a478c503062efe1dd20.pdf
    • https://static.usrfiles.com/ugd/97368a_4afebb151e1e44f692efca6bf187bd36.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/48849211810.pdf
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/71695003085.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/55988837988.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_off00006043.bin
a03ef1ed988f39cf89518c2e28f5ce46b15cb71dac1c144aab16e92122f2526f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 5880 bytes
font_01_sfnt_off0000744f.bin
f28f8b9f1bfdb0713f6bf47a9337cea03848ae4ddffcc5e13d25ca7d4440cbe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744F 10120 bytes

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