Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75b599a9779eeed…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 00:47:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ab0ae75d1a3f20bd6803a9818e8ef9dc SHA-1: 6e8e59ff676361924a45e648bc993c4d255ef526 SHA-256: c75b599a9779eeedebdc31b9c430b49b60d115350a6834d268e9d9a2189cb02f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free items, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a potentially harmful site, likely for malware distribution or phishing.

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-asault-rifle-t-shirt-roblox-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/topkek-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-money-in-mad-city-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-roblox-users_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-legit-computer_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/is-roblox-free-on-xbox-360_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-hack-higher-rank-in-group_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-apk-hack-2021-ios_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_off00002e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E44 22432 bytes
SHA-256: 0f0b8b2280f78e09cb701b15b62a750b10194e2b3ec7db0159e78233184bae80
font_01_sfnt_off00006050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 18992 bytes
SHA-256: 7823ea2a4422f3e87b0b091f6a95d1123c48a699eff335089c6cc6a356179f54

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