Malicious PDF — malware analysis report

Static analysis result for SHA-256 b618d304a319ee23…

MALICIOUS

PDF

48.6 KB Created: 2020-08-23 10:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aecff48e1f311a9ffa26b51bd9c03ee5 SHA-1: ea66c3fdfabb7859cdd193b9f75e04d2665b3df7 SHA-256: b618d304a319ee2348bafbdbfaa1b0be6b8d0de4fd1a7e2c9fc8c015b27a255f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This redirector is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to 'Apple application support' and URLs, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=apple+application+support+64+bit
    • http://files.bbsimon.com/uploads/1/3/2/6/132682570/tudijimavu.pdf
    • http://files.kylacorbett.com/uploads/1/3/2/6/132683330/2726608.pdf
    • https://cdn.shopify.com/s/files/1/0462/7241/3856/files/home_goods_job_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/alpha_m_diet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1040/files/42398242861.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/material_design_android_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0452/6351/9906/files/nirawatabozusexi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/kewobejoturopozuvufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/87102663536.pdf
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/87939073689.pdf
    • https://cdn.shopify.com/s/files/1/0428/9481/9484/files/xutinubifakulujixo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0388/5206/files/54022581176.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/alberta_blue_cross_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/wanoxoduxaraketepewekavaf.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060c4.bin
7fceba7648a53d0ba8a3ddb3fa109960589299a44d037111147e4825babd9f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 5296 bytes
font_01_sfnt_off000072c5.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C5 1800 bytes
font_02_sfnt_off00007b52.bin
8e2bb6105d93c859f4851b8748277de1da447c02495cf6a2ba62446265b78aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B52 10332 bytes
font_03_sfnt_off00009e6b.bin
ffe907badb0ecc7219e2e902eb20165fdf7cbf9d13f09c977717f93f4fa52e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6B 16888 bytes

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