Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6866bcb2540da1…

MALICIOUS

PDF

38.9 KB Created: 2021-05-10 14:55:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 04d07805e643abef58a562071c59b1d0 SHA-1: 1cd0df2cc32762c443c9a433c1800cd39aa23721 SHA-256: 9b6866bcb2540da1bd50c8c20c181cee6e9c4b53cfc86c1630bc586616159344
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains lures for hacking games and requests for sensitive information like private keys or saved passwords, indicating a phishing or scam attempt. It embeds multiple URLs pointing to potentially malicious PDF files hosted on suspicious domains, likely intended to trick users into downloading malware or revealing credentials. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/how-to-hack-coin-master-with-lucky-patcher-game-hack
    • http://sfsbm.org/images/minecraft-bedrock-free-download-pc_GM479516143.pdf
    • http://sfsbm.org/images/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://sfsbm.org/images/113-hacked-client_GM479516143.pdf
    • http://sfsbm.org/images/coin-master-hack-safe_GM406889139.pdf
    • http://sfsbm.org/images/coin-master-free-food-for-pet_GM406889139.pdf
    • http://sfsbm.org/images/best-minecraft-hacked-client-2021_GM479516143.pdf
    • http://sfsbm.org/images/free-robux-scam_GM431946152.pdf
    • http://sfsbm.org/images/codes-how-to-get-free-robux_GM431946152.pdf
    • http://sfsbm.org/images/minecraft-packs-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003c3b.bin
b831efe1daa1ec6774834788ad3b2e2653829fbff5a58c66ab3e922462cb9d0f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3C3B 25532 bytes
font_01_sfnt_off000074eb.bin
34d75f097297ed1589fbb05f13100ff3c6eb1e0ee8c8ab2f5ab039955987b94a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EB 18720 bytes

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