Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e9d43a5138e2c5…

MALICIOUS

PDF

32.4 KB Created: 2021-06-25 12:27:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1e71d9b12278ec0daab75347eb4e388f SHA-1: 21f76d9aea34861e996cac804f8595ec54ab9169 SHA-256: b5e9d43a5138e2c57dbdcf93f72dbc44b36d799e6408d754654af6c1f4982ed0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and exploits, specifically mentioning Roblox and Coin Master. It includes a prominent URL, http://netcdn.co/app/431946152/roblox-hack-generator-club-game-hack, which likely hosts a malicious payload. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests that the user might be prompted to enter a password to decrypt a downloaded archive, a common tactic to bypass security filters. While no scripts were explicitly extracted, the document's nature and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/roblox-hack-generator-club-game-hack PDF link annotation
    • https://library.iuli.ac.id/repository/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/programas-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-how-to-get-free-codes_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/assassin-roblox-free-exotic_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-cheat-xbox-one_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/are-free-robux-sites-safe_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-skin-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hack-roblox-prion-life_GM431946152.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_off000029e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E2 21920 bytes
SHA-256: 4326f22235d31dadb12e557ec506fcbaf8b350db8ddb4b8cbf0116b962d2b36d
font_01_sfnt_off00005a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A44 18900 bytes
SHA-256: ca0b36fb8a32c92387ad6f08c8477e1af97d253aca45991768ff50295b6a2cc8

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