Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2782fd71d275bd…

MALICIOUS

PDF

49.3 KB Created: 2020-08-15 07:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3bbc4272a0dd73539d71303b7f691f2 SHA-1: 2146ce6ffe33f0aeda19151a484152d8f67b9242 SHA-256: 1e2782fd71d275bd276b1a03bb46f6c4fe230f2cdcd299b6f61e5f413e0c983f
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body and heuristics indicate a lure related to 'Eclipse for jdk 11', directing users to the malicious URL https://ttraff.com/pify?keyword=eclipse++for+jdk+11. The presence of a link farm and ML classification further support malicious intent.

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=eclipse++for+jdk+11
    • http://files.ayrtherapyandconsultancy.com/uploads/1/3/0/8/130874543/a25592ea89.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/89154845207.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/99589483543.pdf
    • https://cdn.shopify.com/s/files/1/0444/1748/2919/files/speer_load_data.pdf
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/87439432621.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1404/files/13761648392.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/xapepojoje.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/66487131323.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/70651942595.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/85893469425.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/54595256151.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_off0000779d.bin
c826e48a6087fcb53cbb966621a05934214e6f44772591ece9d5851a87f2f5dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779D 5088 bytes
font_01_sfnt_off0000890b.bin
bb9be2fd422cea1f55476e0c45bd2028b40931fdae3916a2d182cf50714734f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x890B 15328 bytes

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