Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad32afe426639f17…

MALICIOUS

PDF

122.6 KB Authoring application: rkÔfncv´czkÉh-3’êŽü: ?}D
MD5: d91f5fbd6f402924101e53dfb46dc82c SHA-1: 9a235cea8f09eb904809e7bbf87eeb064ab90feb SHA-256: ad32afe426639f17e949d2736685f5d21bd8f6c57e658d345a68d535b98b021b
60 Risk Score

Malware Insights

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

The PDF is encrypted and contains a screenshot lure, indicating a phishing attempt. The ML classifier strongly suggests maliciousness. The presence of an AcroForm button with an action trigger further supports the likelihood of a click-outward action to a malicious destination. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9573

Heuristics 3

  • 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 122 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • Encrypted PDF (string and stream contents are opaque to static scan) info PDF_ENCRYPTED
    PDF declares /Encrypt — string objects and stream contents are encrypted with the standard security handler (RC4 or AES). On its own this is informational; legitimate encrypted documents include signed contracts, billing statements, and rights-managed material. Static heuristics cannot inspect encrypted payload bytes.