Malicious PDF — malware analysis report

Static analysis result for SHA-256 31015920007bdb63…

MALICIOUS

PDF

51.0 KB Created: 2020-09-06 09:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04741450916d4db95e2b4c105cc14a00 SHA-1: 452b07ec7a992fc161cb998dd8c1d87b0ae010ed SHA-256: 31015920007bdb6374a01e9b9977b1799662bedb230192aff82af7a52da82e60
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.link/wix?keyword=sleekform+kneeling+posture+chair', is designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains references to product names and URLs, suggesting a lure to a malicious site.

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.link/wix?keyword=sleekform+kneeling+posture+chair
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/lugefedosovilorajonuzife.pdf
    • https://cdn.shopify.com/s/files/1/0434/1864/8732/files/vugunatikabusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8555/4073/files/poxabukizifebuluw.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/world_cup_cricket_championship_2_game.pdf
    • https://static.usrfiles.com/ugd/b8c837_88832ff918c442568b08c5cada25cd28.pdf
    • https://static.usrfiles.com/ugd/99a8f2_bd0687b5852a42e7beec994ba4b0fb37.pdf
    • https://static.usrfiles.com/ugd/99afdc_ddb3b3ca0eba4e3db39a45d06f46a74d.pdf
    • https://static.usrfiles.com/ugd/5be868_ed0a98e2f8e14d91878ec59d4a34332f.pdf
    • https://static.usrfiles.com/ugd/8ac1ab_dd81da53952b444296115952f0f2eb72.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_92a3e725ed9f47b78f7d3a038512271c.pdf
    • https://static.usrfiles.com/ugd/bb10c5_084f5b23fddf47448de9b22a28f8069a.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/39857373812.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/effective_technical_communication_barun_k_mitra.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/advanced_microsoft_excel_tutorial.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_off000089ad.bin
ca1bf007bf0594f0c80597f4e8b1f95df0bd1b47aca62061341fb235bf46ebdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AD 5596 bytes
font_01_sfnt_off00009c91.bin
847e3760b4033d0593dd138aea4e62e3f554c6f4526398bf2fc67421bfaa0a1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C91 10188 bytes

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