Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c327a1e040e5d8a…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 22:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 616cc9dbcaf5147c9a7ff98b5d722a45 SHA-1: 2f46f091b6e59d31314daf291375f0ab70cc4da8 SHA-256: 4c327a1e040e5d8a1e0717f6d1c10617389d228da73e705e450d54f01993f981
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, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=960+fps+camera+android', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other Shopify links, suggesting a lure to external content. The primary attack pattern involves leveraging these links to redirect users to potentially harmful 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/pify?keyword=960+fps+camera+android
    • http://files.pcteencourt.com/uploads/1/3/2/7/132741194/sudeke_zexesakip.pdf
    • http://files.rivolirallies.com/uploads/1/3/0/8/130874360/davozamiw_dopukadi_wasukujagi.pdf
    • http://files.kadakaboomarts.com/uploads/1/3/2/3/132303075/99759a8b6cd6c5.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/tecnologia_educativa_en_la_actualidad.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/5485905844.pdf
    • https://cdn.shopify.com/s/files/1/0437/3289/3857/files/how_to_evolve_ninjask.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/10331178867.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9667/files/zatolelupesaji.pdf
    • https://cdn.shopify.com/s/files/1/0435/9946/2558/files/61434805520.pdf
    • https://cdn.shopify.com/s/files/1/0437/5085/0709/files/12615065270.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/90086104942.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/toefl_exam_test_sample.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_off00006ed3.bin
38b3aaf0c7d8ea2ad6981125388860f6327dbbac488a10124583e77579f8d144		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED3 5628 bytes
font_01_sfnt_off000081c8.bin
ea1c88e07d08c7ca7cb767ccca283c008e2016fe7b88ebaeb835a931592323e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81C8 10316 bytes

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