Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0ae4250445f88d…

MALICIOUS

PDF

40.9 KB Created: 2020-08-20 23:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04579d86d9b72a8378d662288559cbe0 SHA-1: af6d67549816f06b0356c0e1ee0d204f0eccd2b4 SHA-256: 2a0ae4250445f88d128c237f3b5c1b5a39d9d58cb9a85a9b1095dd999a82640b
150 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'. The document body, though heavily obfuscated, contains text related to 'best all season tires consumer reports' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious destination. The primary malicious URL is https://ttraff.com/pify?keyword=best+all+season+tires+consumer+reports.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=best+all+season+tires+consumer+reports
    • http://files.scottconklinviolin.com/uploads/1/3/1/8/131856826/lidit.pdf
    • http://files.nomadnubians.com/uploads/1/3/1/8/131857717/teseburixez.pdf
    • http://tobob.geneharker.com/uploads/1/3/0/7/130776031/11e3cbd64374d1a.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/19460856081.pdf
    • https://cdn.shopify.com/s/files/1/0431/7786/9476/files/bufurakiwojigejoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/9560/3865/files/technical_report_cover_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/2882/1654/files/hip_hop_beats_at_baseshare.pdf
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/57141178440.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/17418995005.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/30189934129.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/batopijumupafudido.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_off000060fa.bin
7e7787496d9c88e167424dc70fb079f63c9042e4a04861773abf71079cc6ca69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 5128 bytes
font_01_sfnt_off00007253.bin
3eaa7031dfd76b9dabb69b375a48e9016ad8c68dc388e6390b9811cebf1bb028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 10652 bytes

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