Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa981e16ec39b1b…

MALICIOUS

PDF

44.7 KB Created: 2020-07-31 15:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f9a64860d429370262ca5640f2f5647 SHA-1: 6477fb2b416d54af47ca7bdfb9a818cc425940fb SHA-256: 9fa981e16ec39b1b7220f2d77269915b8765d2be4888833f4373967ff7c6291a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine rankings or distribute malicious content. One of the primary links directs to a known malicious redirector, ttraff.cc, suggesting an attempt to lead the user to a harmful site. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content.

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.cc/pify?keyword=fraps+not+showing+fps
    • http://files.firelandsmuseum.com/uploads/1/3/0/9/130969146/xuzokuvego-roporij-pawogatuvuziti.pdf
    • http://files.truelivingcounselling.com/uploads/1/3/1/6/131607075/bamed-mixuserudaxaz-nesarixomomeki-temaribonugato.pdf
    • http://files.klarahomes.co.uk/uploads/1/3/1/6/131637108/6506262.pdf
    • http://files.klarahomes
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/19599460911.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/vukoxuwekuvejek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdf
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/jedizogidozijevag.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/mopadanizaxubisenuze.pdf
    • https://cdn.shopify.com/s/files/1/0430/0642/7289/files/40555712829.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/30740237771.pdf
    • https://cdn.shopify.com/s/files/1/0437/7722/8957/files/fasiduxevi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/87059844935.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/kukifiwotituzitisotigo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5836/3558/files/nagumemanen.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_off00007313.bin
392c34d5ec5bb565d2cae19437729d7f3fe2121d1e750b43f7a61f732d903cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7313 4848 bytes
font_01_sfnt_off0000838e.bin
7ebdafc2193e18c4dafc6b1aaf12256206607f30bf452da91fc3356b5056c35f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x838E 10052 bytes

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