Malicious PDF — malware analysis report

Static analysis result for SHA-256 edefd29dca894410…

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 02:33:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6f1e645a95d608c279a13f4232f2294f SHA-1: 1a9ccf2d81ef4829ca36f762c502ec49cde01764 SHA-256: edefd29dca894410524b6c5c81950991abd4035fcd68419def00e1ab791d1878
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 0.9864

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.tw/app/431946152/generateur-de-robux-cheat-engine-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/tiktok-free-wala-video_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-cheats-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-girl-avatar_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_off00005105.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5105 26056 bytes
SHA-256: 92344023ef4b8bdc9e13eaac6cc96b4b22ed14e067131b97e7d9a03619d5efe4
font_01_sfnt_off00008c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8C 18924 bytes
SHA-256: 8d91c2f3dfa8180ad0f5b9d763bebf96ea4471e43b98ad5664c806ae8f49a73f

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