Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba0fb46037620c0…

MALICIOUS

PDF

127.4 KB Created: 2021-05-21 17:39:45 +03:00 Authoring application: Kathleen Henry (via Lois Diaz) First seen: 2021-05-23
MD5: 9bebf4a98bc4a688e7bf70ca2766ba29 SHA-1: 67ffdde2871508a5f61a0ee3996d6ec6b0fed10b SHA-256: cba0fb46037620c04ac70d876de6c8372c0a489ec0a283e65532bc2b7993294d
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF employs an image-only lure, a common tactic for phishing or malware distribution. It contains a clickable link pointing to 'http://dwhesg1.sed.chestertonhouseforsale.com', which is likely intended to redirect the user to a malicious site. The presence of a local builder path alongside the remote URI further suggests an attempt to obscure the origin and destination of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6117

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 127 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://dwhesg1.sed.chestertonhouseforsale.com PDF link annotation