Malicious PDF — malware analysis report

Static analysis result for SHA-256 5573c99ae2da02df…

MALICIOUS

PDF

34.9 KB Created: 2020-08-31 22:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55c17cfbda75485aa821fb83270c4007 SHA-1: ff0c41cbf36d4eb020edb53a9d656467294f3b80 SHA-256: 5573c99ae2da02df3e69a41061e2cca3b1ede873c85bd8706b07bbf4a191eda6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments related to 'Bejeweled' and the malicious URL, suggesting a lure. The PDF also exhibits a link farm heuristic, indicating a large number of outbound links, many hosted on Shopify, likely to distribute or mask the malicious redirector. No scripts were extracted from this sample.

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=bejeweled+play+online+free+no
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/28387847288.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/297512919.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/insurance_agent_exam_questions_and_answers.pdf
    • https://static.usrfiles.com/ugd/55cc32_6d094c38792c432fad70fa2f6e098fdc.pdf
    • https://static.usrfiles.com/ugd/b8c837_66dc8210f9214acfbe9ec9d284a283d5.pdf
    • https://static.usrfiles.com/ugd/38bf1f_71a3717f69874111aa194b857e994f53.pdf
    • https://static.usrfiles.com/ugd/affaa6_85009870fd9b498ab9b9e3ea585fd6a4.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/20159721264.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/67077210852.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdf
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/rolawoniv.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/wiwiroji.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/20596747886.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_off00004ade.bin
154deab28493f321497a6c3ab04904d3792361b1226be0f6a80906bf980d190c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADE 5176 bytes
font_01_sfnt_off00005ca8.bin
1a5ce86f4384bbfd2ce7a63ee4ed2966f72a04248863a528ccb0a9e5c89db74f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA8 10052 bytes

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