Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3420a7a3dbac8d…

MALICIOUS

PDF

47.2 KB Created: 2020-08-31 17:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9a93c8e4ded4332991280b2c6ca1d06 SHA-1: a96b5131522fb94847685d4406a4620b2bd00a6c SHA-256: ea3420a7a3dbac8d088bb08e6944861fbbd543e9179fe56e8994c35643bbf421
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com, and a social engineering lure to install a browser extension. The primary malicious URL is 'https://ttraff.cc/wix?keyword=music+from+vk+chrome+extension', which is likely used to deliver a secondary payload or phish for credentials.

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.cc/wix?keyword=music+from+vk+chrome+extension
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/appropriation_account_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/english_tagalog_bible_apps_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/kusigonopi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/33798288604.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/89715395527.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/93971074813.pdf
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/integrated_reporting_acca_sbl.pdf
    • https://cdn.shopify.com/s/files/1/0463/5587/3958/files/55835232926.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/nofadaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/64780507566.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/cassadee_pope_the_voice_all_performances.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/22524745371.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_off00007a75.bin
2ea9b490d82c1612848ce53f2989f45b9889b6c903775306a099bb33a1a05c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A75 5076 bytes
font_01_sfnt_off00008bae.bin
16b1986cd8b6c92323e7122247483c63710fe1a44e198282627f705b245da5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAE 10780 bytes

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