Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd5622b20db8de4…

MALICIOUS

PDF

40.5 KB Created: 2020-08-29 07:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69e707c9aee1e7e4aabb910329e00350 SHA-1: 66fb94a18b06e49c15cc27c59da573c11ee47d71 SHA-256: cdd5622b20db8de41cb85b1b8f12fff0f76f42023aa5fad4146db8dbd0ebcfc9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a product review, to entice users to click. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to benign content but serve to obscure the malicious redirector. No scripts were extracted, and the document body itself is heavily obfuscated, making it difficult to determine the exact nature of the payload beyond the initial redirection.

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.com/wix?keyword=hp+pavilion+15+review+2018
    • https://static.usrfiles.com/ugd/b8c837_2c24e4e1eb0944da86694b13644d63f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_260a36ff4bd146d7914a3785e69143f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd3aa7ddd1d54a7f93fccc8d5cfc3341.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/jakuzifiwebekozexemubudok.pdf
    • https://cdn.shopify.com/s/files/1/0435/1236/5211/files/fed_balance_sheet_runoff_explained.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/pdf_biochemistry_for_medical_students.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/36026499046.pdf
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/lawewuzobobigufasetezude.pdf
    • https://cdn.shopify.com/s/files/1/0435/6882/4488/files/2d_array_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/juxikejakukaxifudekufe.pdf
    • https://cdn.shopify.com/s/files/1/0440/7567/9896/files/fezewor.pdf
    • https://cdn.shopify.com/s/files/1/0462/4384/0160/files/aws_certified_developer_associate_guide.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_off00006066.bin
5d9e394c79b4ca9f617b577ae8f9cd039b833d18e6eb2f8e7132a35a970efec4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6066 5392 bytes
font_01_sfnt_off000072dd.bin
d871f487826cab770922d6e38cdafff8c5e324eef55da312f4169fc6c7b3a519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DD 10152 bytes

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