Malicious PDF — malware analysis report

Static analysis result for SHA-256 a610ccde203d7df1…

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 12:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0cf7cda1c1703d8d1e1c44e829890d0 SHA-1: cefd0ff1e86f6c420f2b19e8d5d803bb607b92f4 SHA-256: a610ccde203d7df153a4c552b0f7a3d0c87217f8120aee3628299890d48f7ad1
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 'https://ttraff.com/wix?keyword=idm+6.23+integration+for+chrome'. Additionally, a 'Browser extension / update installation lure' heuristic indicates social engineering to trick the user into clicking links. The document body contains obfuscated text but also explicitly includes the malicious URL. The PDF also contains a link farm pointing to numerous Shopify URLs, one of which is the primary malicious redirector.

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.com/wix?keyword=idm+6.23+integration+for+chrome
    • https://cdn.shopify.com/s/files/1/0431/9828/3940/files/behaviourism_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0464/0587/7915/files/flight_simulator_3d_airplane_pilot_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/2014/0191/files/pinagobupufiregakatexosak.pdf
    • https://cdn.shopify.com/s/files/1/0438/1406/0189/files/data_structures_and_algorithm_analysis_in_c_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zexula.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/center_button_in_form_bootstrap.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/maps_for_minecraft_pe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/givupu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0794/files/94019776903.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/pagezipagisofotebojegigog.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_off00005aed.bin
e0e46c44b30d80e1867bdfd991ca814ed71dc3a8cf9c7c501be317e5f0dc3fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AED 5644 bytes
font_01_sfnt_off00006df2.bin
278bd62c490c245674cf2bee43b28b1ea3aff0978f0dfb0bd0ba947ad84d0278		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF2 10288 bytes

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