Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d94e9493a05ac16…

MALICIOUS

PDF

33.8 KB Created: 2020-05-30 06:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ee81b5088016c283d1f92caa091991 SHA-1: d6afbe44173e99fbc7bb85b23884ed9e191e8515 SHA-256: 8d94e9493a05ac160c21b85d0ab0236a9fca55b7896614d17dbef2bc6d52e88e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains a large number of external links, many of which point to domains commonly used for SEO spam or phishing. The document body, though partially obfuscated, contains text that appears to be a lure. The critical heuristic firing for PDF_SEO_LINK_FARM strongly indicates a link farm strategy. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://rockandrowel.com/uploads/1/3/1/3/131398516/131398516.html#descargar+el+resplandor+latino
    • http://financial-plan.services/uploads/1/3/1/6/131606011/14b16d7.pdf
    • http://tainoworldorganization.com/uploads/1/3/1/1/131164159/busemumunafotob-fekug.pdf
    • http://freshmanimpact.net/uploads/1/3/0/7/130775318/mixisideserev.pdf
    • http://allisonmarketingandapparel.com/uploads/1/3/0/6/130620736/diwudu.pdf
    • http://happypaws415.com/uploads/1/3/1/8/131859895/7429453.pdf
    • http://beehiveconsulting.net/uploads/1/3/0/5/130588874/9469003.pdf
    • http://thesmartpico.com/uploads/1/3/0/2/130289239/xewodebibidokoxoza.pdf
    • http://seeitwell.com/uploads/1/3/1/6/131606687/labudisa.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055f5.bin
0a69f8986d85f963cbec1fd385aafae786af400890006a50f441ff5f738492ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F5 11292 bytes

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