Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f76817fc1a5b03…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 11:11:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1be2b827492d4481621e4cb974627644 SHA-1: 6b6c0ba45c43a58d5069121c15e6014ac9f46745 SHA-256: b2f76817fc1a5b032871c1ca3cf9ca5731725899e0cfd522671a2f96d5bf18bd
82 Risk Score

Malware Insights

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

The document contains a lure related to 'Coin Master Free Spins' and includes a high-confidence ML classification indicating maliciousness. The presence of a 'password-protected archive handoff' heuristic suggests the document is designed to trick the user into downloading an encrypted payload, which is then likely decrypted using provided password instructions. The embedded URL points to a suspicious domain associated with game hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/406889139/coin-master-free-spins-blogspot-game-hack
    • http://library.stipjakarta.ac.id/etd/repository/5-games-to-get-free-robux_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/sentinel-hack-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spin-codes_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-hack-no-verification_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/roblox-royale-high-diamond-hacks_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-accounts-and-passwords-2021_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/youtube-how-to-get-free-robux-on-roblox-jeff-tech_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/roblox-cheat-engine-speed-hack-2021_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/comment-cheat-sur-un-simulator-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/hack-coin-master-2021_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/comment-lancer-proxo-hack-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/robotinc-roblox-hack_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-bleu-download-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-verify_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/hacks-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-2021-robux-free_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-into-any-roblox-account-2021_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-coin-master-cards_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e7.bin
7ad8e9f95d67a236105557d1bf2f6172ec30a60741595342d6dcfa6f9c9aa349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31E7 23348 bytes
font_01_sfnt_off000066aa.bin
05a87c5e5a55dd1cacb71415224dc1225f286447460dff7243b727236e2d7549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 18464 bytes

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