Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08f6fd4ebbd57f8…

MALICIOUS

PDF

36.2 KB Created: 2021-07-06 07:42:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8dbd07cba6c9da72aa08622ea866a7e1 SHA-1: ab7603f90be0af5f8e104c21ce464ebc942a4df5 SHA-256: d08f6fd4ebbd57f8174e7056f3a64b9ddc4eedb0a00b5aff181d3d4d7a5ea2a3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links, including a prominent one to 'netcdn.tw' that is flagged as a game hack lure. The document's content and the presence of numerous related URLs suggest a phishing or malware distribution attempt disguised as a game cheat. No scripts were extracted, but the primary attack vector is the embedded malicious URL.

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.tw/app/406889139/coin-master-hack-apk-33-download-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-weight-lifting-simulator-3-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-generate-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/vehcle-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-money-roblox-pc_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/feral-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-catalog-script_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-account-hacked-and-pin-set_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/best-free-script-executor-roblox-beginner_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cheats-for-city-architect-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_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_002_off00003442.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3442 23284 bytes
SHA-256: d3beeca940609a2d6fc5d95cd7a58a374f0b4588ff452cc3bce76adbe2bc231d
font_01_sfnt_off000068d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D1 18932 bytes
SHA-256: 2df375097719c444e10025c6ab12fed7d3a73fcf858303bcad0385c528f2191b

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