Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ada0ba839ada43a…

MALICIOUS

PDF

27.8 KB Created: 2020-04-08 07:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ae5506e1c0019870deeb27cc42bb353d SHA-1: 29de92e04ab5c61d0096adc77dcbc01e08e6bff4 SHA-256: 0ada0ba839ada43abf9b6998509b960713555cb39a14824c8d093951fc023e0e
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious screenshot lure, containing numerous external links. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm or phishing campaign. The presence of multiple external links and the 'ML_NYX_PDF_MALICIOUS' heuristic strongly suggest malicious intent, likely to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9400

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 27 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://teoandkateswedding.com/uploads/1/3/1/1/131164507/131164507.html#quotes+from+thomas+more+utopia
    • http://peacemakingcreations.com/uploads/1/3/1/3/131379236/45b0e9e.pdf
    • http://1634company.com/uploads/1/3/0/6/130621063/10109a456b7d9.pdf
    • http://mackenzieyork.com/uploads/1/3/1/3/131384015/75ff971c60f7997.pdf
    • http://sanphamnovaland.com/uploads/1/3/0/6/130604579/8259349.pdf
    • http://combatsportsdietitian.com/uploads/1/3/0/4/130436188/abb1f961dbbe.pdf
    • http://larryparsonsonline.com/uploads/1/3/1/4/131438011/suxutokabaratujo.pdf
    • http://mymelgrove.com/uploads/1/3/1/0/131070530/zobisak_liwolalasex_bakoveb_lorukegiduxela.pdf
    • http://m-mali.com/uploads/1/3/1/3/131380305/f1270c875ecba1f.pdf

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