Malicious PDF — malware analysis report

Static analysis result for SHA-256 0390ba1d67dac2cd…

MALICIOUS

PDF

15.5 KB Created: 2020-04-02 02:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cadb01402e692dad728f846eb1f5c804 SHA-1: 4aeae05be8fb05bebbcdaced9dad2775cef1d0b3 SHA-256: 0390ba1d67dac2cdf4b936f5c778c7c7634302087d05fd26708642ed1cfbaef1
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as an image-only lure, typical of phishing campaigns, containing multiple external links. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm or redirect chain. The presence of these links suggests an attempt to direct users to malicious websites for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9455

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 15 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://mindfulcitygal.com/uploads/1/3/0/7/130739204/130739204.html#que+grupos+%C3%A9tnicos+hay+en+veracruz
    • http://pprenos.com/uploads/1/3/0/5/130588927/939609.pdf
    • http://hotgrassandvines.com/uploads/1/3/0/6/130603995/5246409.pdf
    • http://powerplaytigerselite.com/uploads/1/3/0/3/130323635/7ad6fc7cba01.pdf
    • http://faithdesignstudio.com/uploads/1/3/0/5/130589061/6238510.pdf
    • http://karenalexandre.com/uploads/1/3/0/5/130589095/5237702.pdf
    • http://level55art.com/uploads/1/3/0/7/130740015/ad16f2dc.pdf

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