Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b07c04bfae64b11…

MALICIOUS

PDF

75.0 KB Created: 2021-06-25 12:54:50 +03:00 Authoring application: Julie Dunn (via Anne Smith) First seen: 2021-07-10
MD5: 1816205a712b75fc9b81258b703b5e68 SHA-1: 841edbe7a6b410258663b4bb624c69b33faa9b8e SHA-256: 0b07c04bfae64b11c1b15293f554b8fd3a43c3eced2b1be4f3842be5ed4afa31
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains only an image and a clickable link, a common tactic for phishing lures. The heuristic PDF_IMAGE_LURE_BRAND_HOST_LINK specifically identifies that the embedded URL impersonates Walmart. The link directs to http://zfmr.walmartnewjersey.com, which is highly suspicious given the brand impersonation.

Machine Learning

  • Nyx PDF Classifier clean score 0.0262

Heuristics 4

  • Image-only PDF lure links to a brand-impersonating host high PDF_IMAGE_LURE_BRAND_HOST_LINK
    PDF is image-heavy with little real text and its clickable action targets a host carrying the brand name 'walmart' as a domain label / subdomain segment on a registered domain that is not that brand's own and is not known-good (e.g. 'udai.walmartnewjersey.com', 'paypal-secure.net'). Unlike the homoglyph-typosquat rule, the brand here is spelled correctly but glued onto an unrelated domain — the canonical brand-impersonation phishing / scam carrier shape behind a screenshot-like lure page.
  • 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 75 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://zfmr.walmartnewjersey.com PDF link annotation

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