Malicious PDF — malware analysis report

Static analysis result for SHA-256 23a3819adfd14c25…

MALICIOUS

PDF

33.0 KB Created: 2021-07-02 03:46:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 535a2833467ba3e54ba3fb55d6362909 SHA-1: 31f517681c766784ac9bb862082db93ce22e0eed SHA-256: 23a3819adfd14c25d42a8dfbd810909fab8a56a1edc29b9537cb5b2d05b13ef9
82 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to sites offering game hacks and generators, a common lure for malicious downloads. The heuristic firings indicate the PDF is designed to trick users into clicking these links, likely leading to the download of a second-stage payload. No scripts were extracted, limiting further analysis of the execution chain.

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.co/app/431946152/free-house-roblox-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-star-wars-lightsaber-battles-free-level_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-champion-shirt_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/script-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/astuce-anti-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hackear-roblox-para-android_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-downloads-or-human-verafcation_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-inpect-console-working-youtube_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-change-my-name-in-roblox-for-free_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_off00002db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB0 21392 bytes
SHA-256: 8b3fc947980171908239e192ef9c2d2906b932427888d150cc9139f439fd3c16
font_01_sfnt_off00005c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C71 18788 bytes
SHA-256: 9e5c1927d93e2a9cea514738a9ceac20041c667953284c44625b59b69bbb106f

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