Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eccb377aa06536e…

MALICIOUS

PDF

40.0 KB Created: 2020-08-30 23:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12ab68e28e71e086d95e5743ee46a226 SHA-1: 236f1f359fd1c41609d6f505a6fe6635647ad9b5 SHA-256: 3eccb377aa06536e1071f530d638c1cd00b98f455a3851763734e089deb4f875
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic identifying a malicious redirector at 'ttraff.com'. Another heuristic indicates a link farm hosted on Shopify, suggesting an attempt to distribute or obscure the final malicious destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=libres+vip+cuenta+toomics', reinforcing the malicious redirector finding. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=libres+vip+cuenta+toomics
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/tetijutidavade.pdf
    • https://cdn.shopify.com/s/files/1/0437/8951/6962/files/23812458281.pdf
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/lilaxinarubem.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/my_girlfriend_is_the_president.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/kemuvesefokamoxides.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/7648478974.pdf
    • https://static.usrfiles.com/ugd/b8c837_b141bc19f86a429baf8c81e42b40d6e9.pdf
    • https://static.usrfiles.com/ugd/49be48_a6ab102c74e14d83b196c8c1a8f0f409.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9480f7a8b664adbb95a5b2b15bbd69b.pdf
    • https://static.usrfiles.com/ugd/b4a829_e6ea4a0fafb547ef890ebe220dfe8650.pdf
    • https://static.usrfiles.com/ugd/d2751c_8261b2ccf00243b2bea1557e5b19d79c.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_4032b3e0b00e429a8626c60e8a6d25fc.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_off00005db3.bin
6379cb5ad9d76a5e148d612d89942c74b5fb2ccc088c6db4511a7f8fec80cc18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB3 5188 bytes
font_01_sfnt_off00006f46.bin
95cf5aef42620dde294054884b42334f637cf6a24043cb3523282ed495b81227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F46 10684 bytes

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