Malicious PDF — malware analysis report

Static analysis result for SHA-256 a564c502f332f895…

MALICIOUS

PDF

85.5 KB Created: 2020-08-31 01:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 879458ee9e46dd6bfe56968409a43044 SHA-1: d2263f7c9688eb630bcf14acfd8a08dce52c7e5f SHA-256: a564c502f332f89580578e326745a412e50c61127e8254b384ec1dfb839800cb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though partially obfuscated, contains the same URL and a question intended to engage the user. The presence of a PDF link farm heuristic indicates the document is likely part of a larger campaign to drive traffic to malicious sites.

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/wix?keyword=qual+o+objetivo+do+parecer+dos+auditores%253F
    • https://cdn.shopify.com/s/files/1/0437/3318/8769/files/4133905247.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/steps_in_nitrogen_cycle.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/92621133650.pdf
    • https://cdn.shopify.com/s/files/1/0433/6641/6534/files/46071624566.pdf
    • https://static.usrfiles.com/ugd/b8c837_e05324d297dc4267af379c80f65fd9a1.pdf
    • https://static.usrfiles.com/ugd/0df15e_57a0e835d3af4ceca1c3ec850c99d042.pdf
    • https://static.usrfiles.com/ugd/b5472a_a159e4d7e7094df6a7fff7d37442ecbd.pdf
    • https://static.usrfiles.com/ugd/b8c837_dccc252bc9b54ef0aefd27ea420dbcd8.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/diraxanusajalemapa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0491/9971/files/college_panda_writing_download.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_off00010d3a.bin
5b2913df114bdcaf0e51724d39d0e71da059deb8388a0e02fa5975315b1743c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3A 5544 bytes
font_01_sfnt_off0001201b.bin
f56729b6bf123fc5e5447e0519ff71c643ae63012be104c5cbc526c9224591f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1201B 13556 bytes

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