Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a4b904e5e2f6e6…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 09:01:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5293723d6c7a697f8e6283ee6fbbc6bf SHA-1: 5db28ae39783c3d07a13fb34a742b8ec7e1633ba SHA-256: d4a4b904e5e2f6e6c795fa44f9630b3b3ee94116ffe0cae95c82168463779f78
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this lure, pointing to a specific malicious URL. This suggests the document is designed to trick users into visiting a potentially harmful site, likely for further exploitation or malware delivery.

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/cape-roblox-free-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-shiny-charm-for-pokemon-prick-bronze_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/jailbrak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-cheats-for-free-tix_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-use-undetected-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-dominus-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/help-my-roblox-account-got-hacked-and-dosent-have-security_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/sites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-make-roblox-items-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-studs_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-accounts-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-admin-how-spawn-overseer_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hacks-for-free-spins_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_off00002e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E20 22276 bytes
SHA-256: a36db88ad33aea70440385c6993fa5c306c65df71e781a625e3a6ea23eb10a86
font_01_sfnt_off00005f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F81 18824 bytes
SHA-256: d69ca2e5542947304b77b14c36c3612b2fa04d8214289ac4e733972b74b31c1b

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