Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4f57db1f02f0489…

MALICIOUS

PDF

40.0 KB Created: 2020-08-13 22:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c69d6c8c87f9ee07294b21311aaa90b SHA-1: 38db0efa72b630108e0c914dfe72001b2b06ecda SHA-256: f4f57db1f02f0489dc18fbd3cbf019bc78394dce107559705ce768a474f4dc46
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a redirector link to 'https://ttraff.ru/pify?keyword=cascading+style+sheets+outlook+2016'. This suggests a phishing or redirection attempt. The document body, though heavily obfuscated, also contains this URL and other Shopify links, reinforcing the redirection pattern. No scripts were extracted, limiting the analysis of further stages.

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=cascading+style+sheets+outlook+2016
    • http://files.gooseberrycakeco.com.au/uploads/1/3/1/0/131070674/xamukesabu.pdf
    • http://kasipuvav.dembroski.net/uploads/1/3/1/4/131483719/863f83.pdf
    • http://files.societehistoriquenipissingouest.com/uploads/1/3/1/8/131856200/5392923.pdf
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/30009224234.pdf
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/pikekebokufagun.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/certificat_de_cession_de_vehicule_prefecture.pdf
    • https://cdn.shopify.com/s/files/1/0428/7810/7811/files/architecture_design_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/26112821334.pdf
    • https://cdn.shopify.com/s/files/1/0434/1619/1138/files/coriandrum_sativum.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1442/files/nixodotikonogan.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/zugikamekuzemunezab.pdf
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/2769483869.pdf
    • https://cdn.shopify.com/s/files/1/0440/5365/9798/files/25019918278.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/tamanagorodanixila.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_off00005e1f.bin
eed8d70028e36f8e472da84d82fe3acc943b3e323d6a526a95dd89f4dd21241c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1F 5656 bytes
font_01_sfnt_off0000715c.bin
a3493b16c87310750787e288377aa2ccbaa0feb998f2dd9338baf47d81b5b85c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715C 9916 bytes

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