Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a334b49db40c2f3…

MALICIOUS

PDF

42.3 KB Created: 2021-05-20 03:00:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a6a38dd79803903765fb8685c4f0c44a SHA-1: a49e4f8128a594869a84c6b60e94ca7c89292770 SHA-256: 3a334b49db40c2f36d91c3e5a4dffbae9f2793c12cda28627bb306362518ee79
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains heuristics indicating it is a lure for users to download an application, likely malicious, by presenting a fake download button and suggesting a browser update is needed. The embedded URL points to a suspicious domain associated with 'tiktok-free-liker-apk-download-game-hack', further supporting the malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a potential for client-side exploitation or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/tiktok-free-liker-apk-download-game-hack
    • http://www.lycee-langevin-wallon.com/images/free-minecraft-account-generator_GM479516143.pdf
    • http://www.lycee-langevin-wallon.com/images/free-robux-only-1-step_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/free-robux-that-actually-works_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/1x1x1x1-roblox-id_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/roblox-sexually-abused_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/coin-master-free-attack-hack_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/free-robux-wheel_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/how-to-get-more-robux_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/free-robux-hack-generator_GM431946152.pdf
    • http://www.lycee-langevin-wallon.com/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/pubg-4all-cool-20219-uc_GM1330123889.pdf
    • http://www.lycee-langevin-wallon.com/images/coin-master-hack-2021_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/free-coin-master-gifts_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/free-coin-master-account_GM406889139.pdf
    • http://www.lycee-langevin-wallon.com/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdf
    • http://www.lycee-langevin-wallon.com/images/how-to-hack-coins-in-mcpe-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000488a.bin
d57696cd1272fe3dd26a6e8949026da3b2ce7188b7972175c6ef293bcbfdf8d8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488A 24936 bytes
font_01_sfnt_off00008243.bin
2ade8244c69f0d434eac3988ea03ad3e3eb1204f5f2c93819af840199ee5a268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8243 18440 bytes

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