Malicious PDF — malware analysis report

Static analysis result for SHA-256 3762237087656ddd…

MALICIOUS

PDF

36.3 KB Created: 2020-04-14 04:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bda4085f7a7d7426095813867d29094a SHA-1: e6783dfe479b2987f2706e50b006fe4f46a9f00b SHA-256: 3762237087656ddd1df359905b06f40af8fe644a1b5b71b2d08fe8187b534fdb
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. This pattern is indicative of a link farm or a method to distribute malicious content across multiple sites. The ML classifier strongly flagged this PDF as malicious. The document body contains a deceptive title about 'hiccups' and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://francescocamuglia.com/uploads/1/3/0/7/130775654/130775654.html#fight+list+answers+cures+for+hiccups
    • http://projecthomestead.us/uploads/1/3/0/7/130776141/2f3f1949.pdf
    • http://resiwash.com/uploads/1/3/1/0/131070407/gepogusefewejod_zinulije.pdf
    • http://gooder-stuff.com/uploads/1/3/0/5/130545885/eb3a4a87df8.pdf
    • http://jams-truro.com/uploads/1/3/0/4/130488316/xojoperizapake.pdf
    • http://xilraazz.com/uploads/1/3/1/1/131163712/1b1343.pdf
    • http://julesgiftcafe.com/uploads/1/3/1/3/131383264/fofofotubodudiz_fizeba.pdf
    • http://centrosgamusinos.com/uploads/1/3/0/6/130620565/60b5e42.pdf
    • http://scottmoxel.com/uploads/1/3/0/5/130540897/xomevinonamozaxoxen.pdf
    • http://gooder-stuff.com/uploads/1/3/0/5/130545885/eb3a4a87df8.pd
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006754.bin
62e233e170a2d594dae6f304e3f23dbdc3a3bbbc35a999edd25c6195e8a679b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 7804 bytes

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