Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ae32996ba99556…

MALICIOUS

PDF

38.6 KB Created: 2020-08-31 04:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42bd85a56381746addf73bcc7457939d SHA-1: 01ec134709645fc4edeeb5a98ff3c0ea0c9a08b6 SHA-256: 24ae32996ba99556018a2ecefb8869a439904f0adb10c99ab45b8de9b4b58445
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file was identified as malicious due to its structure containing a large number of external links, a common tactic for SEO poisoning or redirecting users to malicious sites. One prominent URL, 'https://ttraff.cc/wix?keyword=r%25C3%25A9sistance+%25C3%25A9quivalente+circuit+mixte', is flagged as a known malicious redirector. The document body, though partially corrupted, also contains this URL and other benign-looking PDF links hosted on Shopify, suggesting a lure or distraction. No scripts were extracted, but the primary attack pattern involves leveraging these links for malicious 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.cc/wix?keyword=r%25C3%25A9sistance+%25C3%25A9quivalente+circuit+mixte
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/kujan.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/97966469735.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/project_budget_plan_template.pdf
    • https://static.usrfiles.com/ugd/d99ef3_6de54319227447ad861c67fae09f8502.pdf
    • https://static.usrfiles.com/ugd/b8c837_674d24bdb85f409d928bbb56dd4c8cc0.pdf
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/sawikaxirewibonakax.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/human_body_parts_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/lajunigule.pdf
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/59415983576.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/66595885977.pdf
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/metabolism_of_amino_acids_and_proteins.pdf
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/5916006956.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_off00005554.bin
7a87ab824b1f0b425f6a4ce985652e39414957c21fb83a063c60cd849c8ca696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5554 5348 bytes
font_01_sfnt_off00006730.bin
2eae96b2d5ae418324c41d43382138ebf6ab8ccaf93aa8d4c9cdb69ea2eca374		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 11660 bytes

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