Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ada9c01c35e0e0…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 05:46:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e4a1c6efc3b8167435480316de868c17 SHA-1: cbbec2e29655cb254ca0f797f654f24b8fc84ea1 SHA-256: d1ada9c01c35e0e0100262569e5704a32b395ae376ac40e6295d2bf3f2364f28
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 0.9832

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/479516143/xray-mod-minecraft-114-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coin-master-cards_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
stream_004_off000053f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53F8 30068 bytes
SHA-256: 8008ebc4077651635af33e82c1dfa9b5e48f9a3797dcab6d93495f9a71700d1e
font_01_sfnt_off000097c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97C6 18460 bytes
SHA-256: a43c34137583abec97edd55f188040188f8f11269e8864abfbfb4c134ff24ca6

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