Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2cd3c7b1d678c6…

MALICIOUS

PDF

44.4 KB Created: 2020-08-11 20:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 574cfd61b984dae1fc090b91bd609b57 SHA-1: 3f96e1d42f1ed1b90e5e3e6be61e7d5aa7522b0f SHA-256: 9a2cd3c7b1d678c68a19f101c761b5bf4545e0b2f8e4e87a378683dd4bfc1573
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of the malicious redirector URL https://ttraff.cc/pify?keyword=ripple+tank+experiment+pdf further supports the malicious intent.

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=ripple+tank+experiment+pdf
    • http://files.beautifultendings.com/uploads/1/3/1/8/131856330/rubabowimisidumixenu.pdf
    • http://files.laurenfalksoprano.com/uploads/1/3/2/7/132740564/c1252f5a559a0.pdf
    • http://files.tradbowmt.org/uploads/1/3/1/4/131452997/lizakoneleneraji.pdf
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/85846997755.pdf
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/d_d_5e_changeling.pdf
    • https://cdn.shopify.com/s/files/1/0432/0775/3888/files/12102744348.pdf
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/81081047644.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/sosopesuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/19576843295.pdf
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/wegoxujek.pdf
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/41828572226.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/daminawixatenekitufob.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/majafonoroxemudor.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/52972983819.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/gexafitetevuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/9535/0684/files/61701964516.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/fidelu.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_off00007197.bin
17379abdbd8ca16646c92e12424c5de796ef6249ea6012ba83d6360a99ac0064		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7197 5148 bytes
font_01_sfnt_off00008308.bin
7d531edc8b8a8c6ce9153123b21d5b0e240e8ec0738bda5804536d43d60cae19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8308 9952 bytes

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