Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc80bc2c37ae7af…

MALICIOUS

PDF

43.8 KB Created: 2020-09-17 09:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a15345f05c08f96ef12b01057c4cd05f SHA-1: a55b15758681f1e4a39177acfcb43708691437da SHA-256: 9dc80bc2c37ae7afb765a4570d28c772cbf8930732f8f85552f2455b1aebae46
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as 'Kwikset smartkey instructions'. This link points to a known malicious domain, indicating a phishing or social engineering attempt. The PDF also hosts a large number of external links, many of which are benign, but the primary malicious link is the most concerning. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=kwikset+smartkey+instructions
    • https://23dd05f9-6dde-432e-8d5c-a9e3b6e80
    • https://728fe141-3ee7-4b48-9baa-1e007c238a56.filesusr.com/ugd/db93e9_0fb32e10e8034e44b7c37f0b78f2c4ec.pdf?index=true
    • https://60d946f3-6e24-490f-89af-1bff75455730.filesusr.com/ugd/18122d_8c7286a2220a444bb37078ecf6f75ec7.pdf?index=true
    • https://b545d3f7-d14e-4aba-a3ec-79508a5cdfcb.filesusr.com/ugd/1c8c1e_e76ee2f00cd9473f90f42ffb26fd5efb.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0436/6991/3753/files/bhagavata_purana_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/food_poisoning_and_microbial_toxins.pdf
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/kasovoreduvexim.pdf
    • https://cb8a2a58-7e26-40af-a19d-305ee39a5a49.filesusr.com/ugd/9c66ff_02508c3b5db147ceab42bb36847a021e.pdf?index=true
    • https://a74e7e29-9c3c-4d10-882c-87356c630731.filesusr.com/ugd/5bb01c_930112759c6943a59f55245cd3cf8a41.pdf?index=true
    • https://71317a35-eba0-4be1-ba2d-413b6a89d586.filesusr.com/ugd/d6af85_f4fa2d1559e54eae8e1b40d53a1bfe63.pdf?index=true
    • https://ca78fa53-a5a3-4f78-b8b9-2e89994517b8.filesusr.com/ugd/9eb187_5f5b422c5f814d6fab8bf7fa7154ab41.pdf?index=true
    • https://1fc5fcb4-247b-4d5c-91c2-34cce3f1e117.filesusr.com/ugd/e98895_0859d8cf32894cab8d21b8f7ed2dcdf9.pdf?index=true
    • https://33f56cae-1734-4e68-9901-7996249efccf.filesusr.com/ugd/96768c_3924610775ac46adb59ed6f17b8a250f.pdf?index=true
    • https://6631dca4-28d5-49d6-ad19-68cc62760a0c.filesusr.com/ugd/38062a_017034640e8c48b281b1c9b9f2eade9e.pdf?index=true
    • https://112e7c5b-51a3-4676-98a2-b9b0490abfb7.filesusr.com/ugd/a31856_d4eaf1e306bf4a36967950cf8f339594.pdf?index=true
    • https://628c244f-43bb-4231-b4f4-507ee685b6f7.filesusr.com/ugd/c63dba_e46f938707624d618da65ffcb68e46a3.pdf?index=true
    • https://23dd05f9-6dde-432e-8d5c-a9e3b6e80be7.filesusr.com/ugd/3bcfef_130807f3df0c4e6ba3269ce4578968f7.pdf?index=true
    • 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_off00006c7b.bin
282e413aa22ad0d23c1bd53a1d1898fa359955fed1cbc0caefdc37a9e327f0c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7B 5140 bytes
font_01_sfnt_off00007df9.bin
9b10bee25269e8047c69b9d31828b0ed90b4b32ff42841010636fa133bade158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF9 10216 bytes

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