Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f5936360ed877a…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 15:27:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 15f799d5ee27045d5fc7ce73197e980f SHA-1: a99d9e63db8512b047b0036c6b381dbfc9bc6469 SHA-256: f0f5936360ed877af9fb078ac16fd6136314481ee1978539c6b9f7614b8d58cd
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, specifically a 'Robux Hack Generator'. The document body and extracted URLs reinforce this, pointing to a URL designed to trick users into believing they can obtain in-game currency. The presence of embedded URLs and the nature of the lure suggest an attempt to direct users to a malicious website, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 5

  • 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.
  • 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/robux-hack-generator-no-verification-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/join-any-roblox-server-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/did-momo-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/juno-hack-filedropper-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-generator-robux-cheat-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/cyber-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-live-stream-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-do-speed-hack-on-roblox-mad-paintball_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-no-hack-or-survey_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-bc-free-clothes_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-coins-in-minecraft_GM479516143.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_off00002fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCD 21808 bytes
SHA-256: 4193c5ea88cb997ed9eb2a7659a0288c170d39072248715ce27cfc1a11f70d55
font_01_sfnt_off00005ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFB 19080 bytes
SHA-256: 6a25f266baf8bf7e5a417b23b16e0bf9cf741d5c2839a6108bedee4c9d86bfc9

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