Malicious PDF — malware analysis report

Static analysis result for SHA-256 d71728af97d77b20…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 05:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f2242def03671a3e89611e7d40d05c SHA-1: 7815ec1cb1a90337407b5b437222e9d6c9b56a4e SHA-256: d71728af97d77b20798659e61b4a59272fb872156b1b4a7b39a424146b13f8a7
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.cc/wix?keyword=confidant+guide+persona+5', which is flagged as a malicious redirector. The presence of a large link farm suggests an attempt to distribute malicious content or phish users. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/wix?keyword=confidant+guide+persona+5
    • https://static.usrfiles.com/ugd/b8c837_3b07c0ad5932484788e556414f4ebab2.pdf
    • https://static.usrfiles.com/ugd/b8c837_db80b0e0394b451c86e1fafbd4b6ea36.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1671a42903845d28d5397c85c4fbc8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_022d96186fe643e38e5ce5c6c37f18ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_19f89640d3bb44aea2a338c217176e68.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/8513832992.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/67387958459.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/83105791614.pdf
    • https://cdn.shopify.com/s/files/1/0434/9054/1728/files/bixidolezi.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4abdd563b084907801b7395f72b7dc4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b97a0e3b72dc47ab8d3b8cce4610559d.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/ex500_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/gofaf.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_off00005e39.bin
690b4d624a8634ba1b94b9d2306e05864b120b275ccac6ad923faf9dd0a552c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E39 5204 bytes
font_01_sfnt_off00006fff.bin
0bc63eb60a79a5a8ba8bd724cdf7b6170a673f9a79ee021200d311f65d58e45f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFF 10040 bytes

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