Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b78e1202fe9fb3c…

MALICIOUS

PDF

82.0 KB Created: 2021-05-23 12:51:04 +03:00 Authoring application: Henry Reynolds (via Paula Stanley) First seen: 2021-05-29
MD5: 9fb4436a03045473a3019815ba2d09a0 SHA-1: b9f9fb5ae833ac32dafab8cd5dce0f4e04f413f9 SHA-256: 1b78e1202fe9fb3ccf82dd3840f874c41abf37dda2cc9eb82127c8a55269ae03
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, using an image to obscure a clickable element that directs users to the external URL http://jr9lmdi.sed.nutritionservices.com. The presence of a local builder path alongside the remote URI suggests a crafted attack. The file's structure and heuristics strongly indicate an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4350

Heuristics 4

  • Image-only PDF carries local builder path plus remote links high PDF_IMAGE_LURE_LOCAL_FILE_AND_REMOTE_URI
    PDF is an image-only click lure that contains both remote HTTP(S) destinations and a file:/// URI exposing a local Windows/Linux builder path. That co-occurrence is not normal document linking; it matches generated clickbait/phishing carriers where the visible page is a screenshot and the clickable area sends the user to external infrastructure.
  • 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 81 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://jr9lmdi.sed.nutritionservices.com PDF link annotation

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