Malicious PDF — malware analysis report

Static analysis result for SHA-256 376bd8149d58a764…

MALICIOUS

PDF

42.4 KB Created: 2020-07-31 18:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e9ac380950014fa1716732fe934fe6f SHA-1: d8e9e2f96cd18202c4a203b3b7e185c4155fe5cb SHA-256: 376bd8149d58a7646c8b3d9728c38cb75488a8153c177fcbba0e233575e01fb7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document's primary purpose is to redirect users to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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/pify?keyword=social+problems+macionis+pdf
    • http://files.cheybchey.com/uploads/1/3/1/6/131606953/7160995.pdf
    • http://files.drawingroom-and-associates.net/uploads/1/3/1/4/131453465/podekobewo-nujonodepa.pdf
    • http://files.brackettvilleha.com/uploads/1/3/0/9/130969045/8855858.pdf
    • http://files.eastcoastawningsandblinds.com.au/uploads/1/3/0/9/130969710/dijuvejikexile-redisepokodanid.pdf
    • https://cdn.shopify.com/s/files/1/0437/7097/0263/files/70199364784.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/benuro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/23604251255.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/makuzilivo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/41903370977.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/25561279180.pdf
    • https://cdn.shopify.com/s/files/1/0432/6565/4939/files/16888960079.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/rokajudirorakigoreb.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/gosijik.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/kewuzo.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_off00006502.bin
f76d1a13c09ee23068be766fd406f164536a8ca183581b4ba763a68abb7d681d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6502 5544 bytes
font_01_sfnt_off000077be.bin
e194f9b5f62ef9eed5a45ef51e225fd74b305eb6d3c72229f43e81f20bf65dc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BE 10940 bytes

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