Malicious PDF — malware analysis report

Static analysis result for SHA-256 8340e8bfadee4718…

MALICIOUS

PDF

47.4 KB Created: 2020-08-02 19:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bd11bc9f31dec5651e75c95d1c1f9a5 SHA-1: bbff49bdf3fd3c70b8756d7d6a0052f90c1a91e5 SHA-256: 8340e8bfadee47181cef62d43e18c95fa30faa946648977130e757d6d9e59365
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.ru/pify?keyword=woodland+park+co+weather, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to drive traffic to potentially malicious sites.

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.ru/pify?keyword=woodland+park+co+weather
    • http://files.deannalsletten.com/uploads/1/3/1/4/131406344/031d596f2ae78d5.pdf
    • http://files.mainstreetenid.org/uploads/1/3/0/7/130776611/zokewelizot.pdf
    • http://files.fairviewlakestudios.com/uploads/1/3/1/1/131164239/17be5.pdf
    • http://files.musserbuilders.com/uploads/1/3/1/4/131437987/padasavikuwil-bimizidawafer-zadoxefubel.pdf
    • http://files.keepingthefaithal.org/uploads/1/3/1/4/131438211/a9862c30.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizazuvolabemonixodokij.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7794/files/81080485026.pdf
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/molecular_biology_principles_and_practice_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/kulekimokojukonaxubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/44700216428.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/mabavuzuzafokelupiposuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/3629782106.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9829/files/43675598637.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/33326966847.pdf
    • https://cdn.shopify.com/s/files/1/0434/5554/5497/files/38045941458.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/guwevaj.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_off00007bc4.bin
5be735913736e9afd0895cc521dbd689d84a02208e0c87e20d12deb17d6a927a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC4 5152 bytes
font_01_sfnt_off00008d61.bin
3bdbc5e312e5eb16590a0617414a006a6487c02dd2d24677512804fe7cd24d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D61 10272 bytes

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