Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95c8d494ace428e…

MALICIOUS

PDF

45.4 KB Created: 2020-08-02 17:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523eb4ece9892539dc5b7ce3d5afcb80 SHA-1: e957dce2c4a2c795d94ae0261e06c5f0297ebff6 SHA-256: b95c8d494ace428ec96ca1bd08dbf9d2a8c327538c06bcb50541586d91956bad
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to shopify.com domains, suggesting an attempt to obscure the malicious destination. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=15+day+forecast+columbus+ohio
    • http://files.coachminda.com/uploads/1/3/1/1/131164132/voxowedegax.pdf
    • http://files.sharingthecarecampaign.com/uploads/1/3/0/8/130874524/tirazixatovituxaf.pdf
    • http://files.mpassociatesrealtors.com/uploads/1/3/2/6/132695258/8194311.pdf
    • http://files.huronlandscape.com/uploads/1/3/1/4/131438477/7200863.pdf
    • http://files.emsathletics.ca/uploads/1/3/1/4/131453194/81fd0f9e3.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/wicked_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/81956092315.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4981/files/xozewusagigazuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/zidixila.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/34073517058.pdf
    • https://cdn.shopify.com/s/files/1/0428/6906/3836/files/70561288557.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/88659053267.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/julikoteza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43377474007.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/lokata.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/dusewalesidovoxez.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/rixikiv.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_off00006a58.bin
38b457d3c3b99c83a6bb9c3ce5c3a77af3f29cb8e10016a438a8eb625f97a73d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A58 5584 bytes
font_01_sfnt_off00007d3f.bin
c5e04df08af021548a14ba1f6ae13ecae0a443605e85c1d2e80c9a520b84a264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3F 14052 bytes

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