Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6444d1416804f1…

MALICIOUS

PDF

40.7 KB Created: 2020-08-31 13:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56f3736048fbc036c0caffa3712445bb SHA-1: c728cc2a860ff1d4de7b44cb2ad2862be2297280 SHA-256: 4c6444d1416804f1dff7c82a55d5bf70f8c9ff75d2a1ce1270adcdaae2ec6794
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wix?keyword=st+john+the+baptist+smithton'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with the primary one pointing to a redirector. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files, suggesting a lure to external malicious 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/wix?keyword=st+john+the+baptist+smithton
    • https://static.usrfiles.com/ugd/b8c837_f101c65fa2fe4cafa78c193f6aab79a0.pdf
    • https://static.usrfiles.com/ugd/04e6f9_f83ac2a57d2e43a6b4d3e5e5a9c7efad.pdf
    • https://static.usrfiles.com/ugd/6240f8_bdbe9c16a13d45018ed1a5a7c6bc414e.pdf
    • https://static.usrfiles.com/ugd/1a89c8_f8261b787947428f9a9ab9c833c27144.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/kibuperegonudoximoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/lezosupejenemikobej.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/31151898629.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/captain_marvel_2019_trailer_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/pusidizisumeduvolirimuzi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/xixiloxorezasozokedug.pdf
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/komajekixalapuzun.pdf
    • https://static.usrfiles.com/ugd/6d59ab_807055a0bace47acb0f9e895782c0f6f.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_330861cfbb294d31bfc3daf05f3e8e2c.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_off00005b98.bin
f67c95a1811579e8833d345340b0941e329b3ce00f12c0229bef6fc18178a3ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B98 5248 bytes
font_01_sfnt_off00006d4c.bin
5f4943fdeff0c4f68ccb4b383471eaa3464fb4e935c8ffd7cae79bd888270794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4C 13008 bytes

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