Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08105f59d94824f…

MALICIOUS

PDF

32.5 KB Created: 2020-09-01 07:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9accfb442aa90f678ab0173007a56167 SHA-1: 01da11c8f6bf28cc6e10fd5d34f0b188a245308b SHA-256: a08105f59d94824feab54db4feeba8d21118bfa674a7c1b6e34849348204a331
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'camera snap sound effect free' download. This URL, https://ttraff.cc/wix?keyword=camera+snap+sound+effect+free, is the primary indicator of malicious intent, likely leading to further malware delivery.

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.cc/wix?keyword=camera+snap+sound+effect+free
    • https://cdn.shopify.com/s/files/1/0431/6492/6111/files/servidor_web.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/lowibeminogevojim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/12017302406.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/solodepu.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_6831eef83d4f49a1a64ec60ffbbe8daa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/history_answer_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/zetevubesap.pdf
    • https://cdn.shopify.com/s/files/1/0431/3484/5079/files/96053187829.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/riguxarimagibebafobavef.pdf
    • https://static.usrfiles.com/ugd/de60da_13233fb94a2c4b92a372571ec3e91537.pdf
    • https://static.usrfiles.com/ugd/d1d005_d083ac766a494f629c54f70383a1f63b.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_821eff97c6b7441fab25059971595052.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_off00004261.bin
65eb724731fbc13d6573a85665fa44800c7757480eb48ba3f5a786d6ed65ec99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4261 5172 bytes
font_01_sfnt_off000053e0.bin
9f4a6279456c563f8fa72fa2c63ee80bc604320ba62cff07df199ae30a1116b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E0 9772 bytes

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