Malicious PDF — malware analysis report

Static analysis result for SHA-256 e65dbe527d30a57d…

MALICIOUS

PDF

22.3 KB Created: 2020-04-07 21:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2ef970915305f885a1d0d2ab5af14430 SHA-1: 734f8583be0ce89932a68ce457cd4f46ad8efbb6 SHA-256: e65dbe527d30a57d24d591ca6e79b4890aad0211edcd20437672de6a48d613b9
112 Risk Score

Malware Insights

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

The PDF is identified as an image-only lure, typical for phishing campaigns. It contains a click-outward action to a URL that leads to another PDF, which is part of a link farm. The ML classifier strongly indicates maliciousness. The document body contains text related to 'Handmaid's tale download pdf', suggesting a lure to entice users to download content, which then redirects to multiple external PDF links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9754

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 22 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://kim-ba.com/uploads/1/3/0/7/130775144/130775144.html#handmaid%27+s+tale+download+pdf
    • http://ndmoutreach.com/uploads/1/3/0/4/130476611/fekodisop.pdf
    • http://earnlinks.net/uploads/1/3/0/5/130545360/jufatosesovifore.pdf
    • http://luisaquezadayoga.com/uploads/1/3/0/4/130488983/26fb2.pdf
    • http://bellhouseart.org/uploads/1/3/0/3/130313577/fanif_wavuketobuvad.pdf
    • http://5150restoration.com/uploads/1/3/1/0/131071243/fe278fbdea.pdf
    • http://toolsforleadership.com/uploads/1/3/0/8/130813606/3760849.pdf

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