Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadeb4eead9e80a0…

MALICIOUS

PDF

40.8 KB Created: 2020-08-28 12:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 464b1f9916ad2a34ca54eefc6fa4b276 SHA-1: cf160c6aab7e87d76ab70a8ece01af7a514c6800 SHA-256: fadeb4eead9e80a030db4873b91f319891c4b06418f921f64bbbfa4a16a14f62
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1200 Hardware Add-Override

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the malicious URL and references to 'wkhtmltopdf', suggesting it was generated programmatically to host these links. The primary intent appears to be luring users to the malicious redirector.

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/pify?keyword=monster+hunter+world+greatsword+tree
    • http://files.spectrumoilfieldsupplies.com/uploads/1/3/1/8/131871786/6b1df64a.pdf
    • http://files.montclairschoolsdata.org/uploads/1/3/2/6/132681194/2093328.pdf
    • http://files.eevcom-montpellier.com/uploads/1/3/1/8/131856121/7336076.pdf
    • http://nunuz.nsfaphs.org/uploads/1/3/0/7/130775274/45c43c33f.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7185/files/despite_and_inspite_of_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/zazofed.pdf
    • https://cdn.shopify.com/s/files/1/0438/4122/4869/files/lodininitalemuleledu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/online_translator_english_to_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0435/4103/7207/files/nokarozaxotosawukolosofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9139/3698/files/nederewazubuwigezajekizag.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/52471333030.pdf
    • https://cdn.shopify.com/s/files/1/0437/6654/6583/files/lands_end_trail_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/19828460826.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_off00006183.bin
3896af6d74f7724ca5cd1037107573fb3b33d65931aeeb8c238c69bcb075147f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6183 5184 bytes
font_01_sfnt_off0000732e.bin
b247a2626eaff745dbeafc8e95ad1935764a43b8f4394769b5c82a65792a419c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732E 10288 bytes

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