Malicious PDF — malware analysis report

Static analysis result for SHA-256 4520ec4fc3710ba0…

MALICIOUS

PDF

89.7 KB
MD5: 0ba7eafbb001ca1575f89a8cd60356ff SHA-1: 0b829abc1ffc577a2b1edded42e5b098178ae3ee SHA-256: 4520ec4fc3710ba02d350b18ace930ab9d7c0a0f301b3147986b82baa33a1db8
68 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a direct link to an executable or archive payload. The embedded URL 'http://theplazahotelresort.com/pEp/643ee0e4e8e39.zip' is highly suspicious and likely serves as the download source for a secondary malicious payload. JavaScript actions were also detected within the PDF, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0196

Heuristics 3

  • PDF link points directly to executable/archive payload critical PDF_DIRECT_PAYLOAD_LINK
    PDF contains a clickable HTTP(S) URI whose path ends in an executable, script, shortcut, disk image, or archive extension. Documents can legitimately link to installers, so this is a high-risk delivery indicator rather than a standalone exploit fingerprint.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objstm_0035_00.bin
ba80b4c85df5fa8dd49b42810ad85ba73af0cdf10b5436933cf8b0b04a6ad2ee		 pdf-objstm-decoded PDF /ObjStm 35 0 obj (inflated) 9753 bytes
font_00_cff_off00002e77.bin
6a8fe7edf78b40330dec5ef5ed2eb0cf663fa4fed7c8e413d302d2d0f2aac6cf		 pdf-font-stream PDF embedded font (cff) at offset 0x2E77 3135 bytes

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