Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3c8d7a08309316…

MALICIOUS

PDF

35.3 KB Created: 2021-07-09 14:22:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 150e71818b296265b8e8ee1af172214a SHA-1: 618e7f3a51bf678668ab51dcd95865294be36967 SHA-256: 9d3c8d7a083093163b63ea6f1ef9a045e50607c10dcf9730127001d98a780278
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/479516143/hacked-client-for-minecraft-bedrock-game-hack PDF link annotation
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/pubg-uc-uae_GM1330123889.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/who-to-email-when-your-roblox-account-is-hacked_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/kill-all-prison-life-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/cheat-engine-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-roblox-hack-for-ipad_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-any-hat-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-rs-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-account-generator-roblox_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E9 23156 bytes
SHA-256: 0a881ff79a4e3d1463bed156e31cb3af94c93f0917333f197e3eb5dd1eda6b4c
font_01_sfnt_off0000669c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669C 18632 bytes
SHA-256: 1597258b0313286761e748ab166835546223df5d32c684e17f237f0d5698bb4f

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