Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f9d9a6ea531fd6…

MALICIOUS

PDF

31.4 KB Created: 2020-03-23 10:32:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 15c1c0cd1cd43a195f9e8a1aa3dbcbfe SHA-1: 08f3e0a3808ed666d9fd698300a771411ed0b400 SHA-256: e4f9d9a6ea531fd6e5a02a7bba854fbca0efe2e8c20444a57585b90b6cc22c56
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are numerically or generically named PDFs hosted on various domains. The document body text, though partially corrupted, includes a reference to "Best egr delete kit for 2015 6.7 cummins", suggesting a lure to attract users to click on these links. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fraternidaddelsur.com/uploads/1/3/0/8/130874076/130874076.html#best+egr+delete+kit+for+2015+6.7+cummins
    • http://www.lindsayrosehealing.com/uploads/1/3/0/8/130814088/955199.pdf
    • http://cncsalesonline.com/uploads/1/3/0/7/130776492/wodipa.pdf
    • http://waynekingphoto.com/uploads/1/3/0/6/130639662/kozivolagewati_vugimasub_wusefuzizafi_keboxevi.pdf
    • http://fitradical.com/uploads/1/3/0/4/130483728/zalorifosapow.pdf
    • http://www.houstonautoglass.site/uploads/1/3/0/7/130739124/20cda90db340e71.pdf
    • http://kumovagroup.net/uploads/1/3/0/6/130639976/zexudobig.pdf
    • http://lascotfringe.scot/uploads/1/3/0/6/130622024/gasewedad.pdf
    • http://kapipal.com/uploads/1/3/0/8/130814460/4dfb5cd01d7d2a.pdf
    • http://norwoodmedicalltd.com/uploads/1/3/0/6/130621864/fisitazuvi.pdf
    • http://northvanmusicacademy.ca/uploads/1/3/0/6/130621206/8302398.pdf
    • http://peerinteractivestudy.com/uploads/1/3/0/7/130775268/8261553.pdf
    • http://www.facebookmarketingforgyms.com/uploads/1/3/0/5/130538937/sodofutepajux_pukibixosatusux_damobedamuv_posujesajunez.pdf

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