Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d4b71734422e76…

MALICIOUS

PDF

38.3 KB Created: 2020-08-22 00:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 569c1ae801653d4270285e2cb9390763 SHA-1: 113f2f098d6a01fada24a6e19422b7abd3b886e1 SHA-256: f9d4b71734422e766406d95aef1aa6a05cd3546de0dc7a320469703985b6d913
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which points to a URL containing 'manual de taller kia cerato 2010'. This suggests a social engineering lure. The document body, though heavily corrupted, also contains this URL and other URLs that appear to be part of a link farm, hosted on Shopify. The primary malicious URL is ttraff.cc, which is known for redirecting to malicious sites. The file is a PDF created by wkhtmltopdf, indicating it was likely generated programmatically.

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=manual+de+taller+kia+cerato+2010
    • http://jamiweno.prologuetech.com/uploads/1/3/2/6/132682204/b3978176.pdf
    • http://jonetidu.facemasksforbusinesses.com/uploads/1/3/2/7/132740837/kabatokaxegedefobure.pdf
    • http://files.manyano.org.za/uploads/1/3/0/7/130775219/54505dc2a507.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7032/files/kotodubezevepoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8938/7935/files/53658673455.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/bivavawarisozigubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/avalon_board_game_rules.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/82611136415.pdf
    • https://cdn.shopify.com/s/files/1/0429/5350/6969/files/gigabyte_x299_aorus_gaming_7_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texigusowemojegovivek.pdf
    • https://cdn.shopify.com/s/files/1/0439/9444/8030/files/zokagorope.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/wekejosoxodib.pdf
    • https://cdn.shopify.com/s/files/1/0428/4930/4742/files/ninapomabipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/t25_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/17105270113.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_off0000599d.bin
f2e18edad6943558eb19c23cbd7752a65bdcceffbb424bd789226b267e2166c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599D 5148 bytes
font_01_sfnt_off00006b30.bin
f60e3a7076574947714f66eda104e4133a7b3bcc06f17c24ed067c11bf3f8d79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B30 9720 bytes

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