Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f72038941594f2…

MALICIOUS

PDF

40.5 KB Created: 2020-08-25 19:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48b04b2e55f9e068c08010edb9f4e96a SHA-1: edfd12809eefaedaf3b0b4ddfeb69e49eea35cd3 SHA-256: 54f72038941594f2e094ae6c4de7b296f8d1104c49df9744eb815d9e0356a593
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the text 'Cuisinart coffee maker directions' and the malicious URL, suggesting a lure to a potentially malicious site.

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=cuisinart+coffee+maker+directions
    • http://files.banyantreecounseling.com/uploads/1/3/1/6/131606965/lanusexilogola.pdf
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdf
    • http://files.camppepper.com/uploads/1/3/2/3/132302913/1217584.pdf
    • http://files.hughesenveng.com/uploads/1/3/1/4/131483128/9964334.pdf
    • http://bakotagag.babasvegancafe.com/uploads/1/3/1/4/131406069/4614727.pdf
    • https://cdn.shopify.com/s/files/1/0463/1753/5397/files/xewipetiba.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/89058010890.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/lexujexaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8676/4446/files/velumejojexakatesaninobof.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/79396535232.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/95026576441.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/agama_adalah_nasihat.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/48004650759.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_off00005f69.bin
ed7931737c81349ea600099ed3d5170b51228b142cad911ca9af6abd826d1409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F69 5104 bytes
font_01_sfnt_off000070aa.bin
3c965679910d82bd88ddd8661b3e3e891acb7554ffe7c378c210a65e4a7a42d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70AA 10632 bytes

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