Malicious PDF — malware analysis report

Static analysis result for SHA-256 367338d4b5bf965a…

MALICIOUS

PDF

36.8 KB Created: 2021-05-16 13:36:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 34e36870191cf0c3a652b4c03491876c SHA-1: e2c163695e70e50b2bed234581daaf2372493798 SHA-256: 367338d4b5bf965a27b96c788d4a1b697fd510ae1cb510987d239f7a130f5334
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'Coin Master Free Food' hack, directing users to a suspicious URL. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to solicit sensitive information like account credentials or private keys under the guise of providing the hack. No scripts were extracted, but the embedded URL is a primary indicator of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://netcdn.xyz/app/406889139/coin-master-free-food-game-hack
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000034ae.bin
03fca5916492312f2e0df13c3fd6568da642b73cda8a242562bca4f1e441a02f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34AE 25608 bytes
font_01_sfnt_off00006f93.bin
dce98ab1a9f6331dfaabbdd57dacdba92c66b57249d10e9c2a1df39138c2a47b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F93 17884 bytes

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