Malicious PDF — malware analysis report

Static analysis result for SHA-256 96eb771a819b4b19…

MALICIOUS

PDF

44.5 KB Created: 2020-08-15 00:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe5b8e488d9f4ffcc2d4a7471e7fe0ea SHA-1: f55582eff275b2963890b5d963f919814647e253 SHA-256: 96eb771a819b4b19a08f18ec276e5534ba56a2fa5749a0095b95acb918e6f2f2
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and other embedded URLs, suggesting a lure to external malicious content. The presence of numerous Shopify-hosted PDF links, while mostly benign, is part of a link farm strategy to obscure the malicious redirector. No scripts were extracted, limiting the analysis of the payload delivery mechanism.

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/wb?keyword=warrior%20cats%20pdf%20omen%20of%20the%20stars
    • http://kekupux.andreabridgephotography.com/uploads/1/3/1/6/131637024/3387232.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/72818193953.pdf
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/boule_de_suif_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4541/files/functional_skills_maths_level_1_practice_tests.pdf
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/9191364401.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/descarca_biblia_ortodoxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/pifug.pdf
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/bodidefonakuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/dogagogekugubetopisebazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/dukitotujadetipeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/84514251782.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/81792605891.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_off00007103.bin
69aef4cac39c4593d121e0429ceae33e3f6eb37c1586d382f9d34d4a2614f636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7103 5376 bytes
font_01_sfnt_off00008326.bin
4d033624fa988721ea64fcb83cff13d4d1bda7a853edf704fc10abdfb391ba8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8326 9968 bytes

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