Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7f9ae888e63cc3…

MALICIOUS

PDF

44.9 KB Created: 2021-06-04 04:49:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 030cda97c4e782d3eafe9e11a9b6ae5b SHA-1: d9ceab55db031a1e7b922cc5f8b3024c7221c699 SHA-256: fd7f9ae888e63cc3de02059604dcb1621946e4a69a89274bb8169d60c8d59aa8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/how-to-get-free-glasses-on-roblox-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id//repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-robux-giveaway_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
stream_004_off000051ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51AD 25988 bytes
SHA-256: dec7098364e16e3c2e03fb7168be9b078027195606b9007f532dbf13526ba4fd
font_01_sfnt_off00008c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C62 18444 bytes
SHA-256: 0f6fb93003a68a144b75c1a34136d137a74aaad9c5846b7245d54ad6d7df63f0

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