Malicious PDF — malware analysis report

Static analysis result for SHA-256 b43298d9cd7dc0ee…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 11:09:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c765d0ce7e3e95926631eb1beac65ad3 SHA-1: 64c072274831ee2603060041fe78cbf2c8fc76bb SHA-256: b43298d9cd7dc0ee41e94504581c8e015e4ccc4f273e2133c4be35e77a14a93b
82 Risk Score

Malware Insights

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

The PDF document contains embedded links and text that lure users with promises of game hacks and free currency, specifically targeting Roblox. The primary link, http://netcdn.co/app/431946152/how-to-hack-roblox-no-inspect-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interest in game cheats to drive them to malicious content, likely a downloader or phishing page.

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/how-to-hack-roblox-no-inspect-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/earn-free-robux-by-doing-tasks_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-roblox-2021-febuary_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/s303-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-a-free-bc-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-injector-september-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-no-survey-no-download-easy_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-robux-for-free-2021_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_off000031e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E6 21812 bytes
SHA-256: 4246e5186866755f80f215b2a00e657308c8342462083f4b2158cd1eb6a64d17
font_01_sfnt_off0000620f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620F 19100 bytes
SHA-256: b9b9fb597e3c68da9362e2aec57f2c34e2cdd7d960c773fb2f0813b647c7590f

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