Malicious PDF — malware analysis report

Static analysis result for SHA-256 c674b095bdbcdbdf…

MALICIOUS

PDF

220.5 KB Created: 2020-07-28 16:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e051ccdb5b3320b04191aa7e78d0228 SHA-1: f35b3da6c61d3560da6129e7aa7325cbae218ee4 SHA-256: c674b095bdbcdbdfea22c3bf7a9f0380ea94e209adf279b545f1e73161a8a58f
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure users to a harmful site. The document body, though heavily obfuscated, appears to be related to game characters, likely serving as a lure. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 2

  • 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.
  • 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/pify?keyword=marvel+strike+force+characters+guide
    • http://files.epsilonkappatx.com/uploads/1/3/1/6/131606640/57f8aa9.pdf
    • http://files.tormonbrothers.com/uploads/1/3/1/3/131384660/016d5.pdf
    • http://files.secondwindcoaching.ca/uploads/1/3/1/4/131482976/895576.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/dimimoforim.pdf
    • https://cdn.shopify.com/s/files/1/0436/5575/7977/files/widepujojadum.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/13366938178.pdf
    • https://cdn.shopify.com/s/files/1/0433/7913/0531/files/girulupojarel.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/73164651765.pdf
    • https://cdn.shopify.com/s/files/1/0437/3856/2712/files/miseso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wixet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/9636028357.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/wunereful.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_off000325f7.bin
93c5d7054a7a7877383dfa2cde753f285f08377ef9d91f03088b1c419b306518		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325F7 5188 bytes
font_01_sfnt_off000337c1.bin
9504cf7e286e882401d5b0ff60b64638273cf411c67da7b6b7e1332430b17137		 pdf-font-stream PDF embedded font (sfnt) at offset 0x337C1 13644 bytes

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