Malicious PDF — malware analysis report

Static analysis result for SHA-256 43cc61ff72a46088…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 12:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51e2d375d27ed9e5b684711c4f37e1f5 SHA-1: 6b950a57d76bb034885617411052f6c801d0d27a SHA-256: 43cc61ff72a46088d9a47eef4e5c4d5188c9d567d1339f85664aa85680fac5da
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/wb?keyword=inversor%20de%20voltaje%2012v%20a%20120v%20diagrama%20pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on domains like cdn.shopify.com, suggesting a link farm designed to redirect users to potentially harmful sites.

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.com/wb?keyword=inversor%20de%20voltaje%2012v%20a%20120v%20diagrama%20pdf
    • http://files.danaberger.com/uploads/1/3/1/4/131438228/funisefisudev.pdf
    • http://wozozalis.theclayloft.co.uk/uploads/1/3/2/6/132681396/sorukijitinosul.pdf
    • http://files.j2academy.com/uploads/1/3/0/9/130969624/a1278113.pdf
    • http://genidubid.redrockfurniture.co.uk/uploads/1/3/1/3/131381787/pozududilune.pdf
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/nivefulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/54147105207.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5743/files/begezozitunutogal.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/fawilobufud.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3408/files/ace_academy_ies_conventional_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/dell_r740_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/lubipimen.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_off00005f75.bin
41ca9b9c01974dc25dde7617c241428a4172235e88e6084554777761a1ff4f8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 5760 bytes
font_01_sfnt_off00007311.bin
20141b3f9158d8fd346618c29ee17e7acdbe692e9d152214a4e5b6283c6a389a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 10868 bytes

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