Malicious PDF — malware analysis report

Static analysis result for SHA-256 d325b8a4b6b4539b…

MALICIOUS

PDF

61.0 KB Created: 2020-09-01 11:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14707fa1a170af96fa281f4a7789213 SHA-1: cd9d5e96a553a555aea3bdf193252797c1e42589 SHA-256: d325b8a4b6b4539b9f39a1c424fee217cc657b8991e8ab09ca80d0398e1b3299
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to ttraff.com, which is also present in the document body. This indicates a phishing attempt to lure users to a malicious site. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=global+burden+of+disease+study+2013+pdf
    • https://cdn.shopify.com/s/files/1/0465/1817/3854/files/rawobuvogiwosiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/71203781095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekutaxawiwasutoxojopelor.pdf
    • https://cdn.shopify.com/s/files/1/0435/4975/3493/files/65017762775.pdf
    • https://cdn.shopify.com/s/files/1/0464/1167/7864/files/animation_desk_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/5835/4584/files/brassage_gntique_exercices_corrigs.pdf
    • https://cdn.shopify.com/s/files/1/0456/8544/0671/files/80273121669.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9347/files/rinuvelojesad.pdf
    • https://cdn.shopify.com/s/files/1/0436/6296/6937/files/linear_equation_graph_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/6027/8949/files/62084291426.pdf
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/95364261385.pdf
    • https://cdn.shopify.com/s/files/1/0428/2915/2423/files/30440896694.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_off0000ac7b.bin
5c9a465b89d37b5366a90071dd45e98a9eb7e051ae0bbae3dd016b58d426d266		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7B 5796 bytes
font_01_sfnt_off0000c04f.bin
dc5210f9cecc5b29daabce34a62e18cc615f5a150d9f751279044ff4bb3b9437		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC04F 12028 bytes

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