Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a02ecf3d88aae5…

MALICIOUS

PDF

31.4 KB Created: 2020-08-31 07:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c5931c96daef6c34b0f518b1cec6580 SHA-1: 9c730956e2bce07e95d41a33f769b0eff760442a SHA-256: d9a02ecf3d88aae5a6b78260573557ee078dba3301f362696af0f7b48c4a69d9
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=budokai+3+rom'. This indicates an attempt to lure the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, also contains this URL and other Shopify URLs, suggesting a link farm or content delivery mechanism. The presence of multiple PDF links and a redirector points towards a social engineering attack.

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=budokai+3+rom
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/17928712093.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/kavarapimupekupu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1974/files/cardiac_arrhythmias.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/49743529001.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_fb39b1f987a54fff9e77df9c81032ed4.pdf
    • https://static.usrfiles.com/ugd/b8c837_785771358b144249a8f55fa1d806eb23.pdf
    • https://static.usrfiles.com/ugd/f515ca_a275f4a6183d4bd78f2a459fec2d168d.pdf
    • https://static.usrfiles.com/ugd/1be480_dc4c31fe56ff4dc1aaf1b8ae8fce9f0c.pdf
    • https://static.usrfiles.com/ugd/191a6d_0446aed66ee247f2a94b7723e3a4336c.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_off0000402b.bin
ceefd977c50a24f1721d7097d40eb843dd550c58e93d0f90395fd3160d79c65c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x402B 5040 bytes
font_01_sfnt_off00005136.bin
43e39b3253f6c328994334c808cba49056ec82327210cd75858850f4be9612e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5136 9484 bytes

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