Malicious PDF — malware analysis report

Static analysis result for SHA-256 257e78748a55da3d…

MALICIOUS

PDF

51.7 KB Created: 2020-09-01 01:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 457536ba844b011ed44d4864407af893 SHA-1: 3771260ae902e8a43d6be17ac87d664e39e0e849 SHA-256: 257e78748a55da3d8c7b54f51ad580d4e50b7f765b6eeaa79983678ec49b5ac8
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=guardian+egyptian+text+font'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links embedded within the document body. These links likely serve to redirect users to malicious content or to manipulate search engine rankings. No scripts were extracted from this sample.

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=guardian+egyptian+text+font
    • https://static.usrfiles.com/ugd/b8c837_497dc99242c144dbba8b873bab2c1a97.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2561f96755046cd95a132fba1d20e7e.pdf
    • https://static.usrfiles.com/ugd/fb83f1_8870b2a4eed04c3aaa91d302c67a6696.pdf
    • https://static.usrfiles.com/ugd/b8c837_42a66ad919d34360ae6ce3c67c1ee1a9.pdf
    • https://static.usrfiles.com/ugd/73cb9e_03704fcff5e34ee29060468748db3451.pdf
    • https://static.usrfiles.com/ugd/b8c837_39ba440767614faface86cffa9614acd.pdf
    • https://static.usrfiles.com/ugd/b8c837_62791ce8fa0e495aa54d24cf65722194.pdf
    • https://static.usrfiles.com/ugd/9734e7_21672c55a5bb40bab92357f4c27e58f1.pdf
    • https://cdn.shopify.com/s/files/1/0438/0822/7490/files/8636555055.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://static.usrfiles.com/ugd/cc089a_3db2d309982946aca6dff0df8a509049.pdf
    • https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
    • https://static.usrfiles.com/ugd/b5aed9_227ec226350f4de1a7e6fca1df435682.pdf
    • https://static.usrfiles.com/ugd/87a178_10776d8b60cd48198bf2a962721bf1f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_548c5ddb3371429b8a2356f22c464786.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_off00008c2f.bin
f666bc799481805981f8074d1c4731c2a1313a3c6bccff43045b8d3aa7970a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2F 5200 bytes
font_01_sfnt_off00009e04.bin
359d863687209e00da64634d7b149cd2d769bddeb4e2c74f14d57881afa5aabb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E04 10512 bytes

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