Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c87b06a7cdce9b…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 05:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 49425e56656fd10f1052348228413ce8 SHA-1: 317a472abc3204b349cb788c04dbd5fba4fb0e77 SHA-256: 97c87b06a7cdce9bf9bd92e8748774cea7a4ac06c2623eade5b84bcbf3cc3340
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 0.9980

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-without-human-verification-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/cheat-engine-fonctionne-sur-quel-jeu-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-ancient-erath-cheat-pastebin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-now-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-gte-free-robux-codes-for-pc-2021-october_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-prison-life-hacks-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-with-consol_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-gift-in-big-paintball-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-money-on-rocitizens-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-script-executor-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-dll-phantom-forces_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_002_off0000309d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x309D 23440 bytes
SHA-256: 4afb8d840416eb659d51a080deae61047b2309cf67221fd2593cdd4513220c63
font_01_sfnt_off000065b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B0 18904 bytes
SHA-256: 2b59a93daaa5c621716151829f81455d75a870d677e7060bc76b17460129e809

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