Malicious PDF — malware analysis report

Static analysis result for SHA-256 9988f19427584499…

MALICIOUS

PDF

44.1 KB Created: 2021-06-04 00:53:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cc7520dcdbbd5ad42862c79d31cdd864 SHA-1: dace364781ac59cb1c646b63a0ace37249e98e5d SHA-256: 9988f194275844995917d27008791aed0683329d50ce700d1f655bfd84b4697f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically mentioning 'roblox-avatar-tester-game-hack'. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URL likely serves as a lure to download a second-stage payload or redirect the user to a malicious site.

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/roblox-avatar-tester-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D9 24612 bytes
SHA-256: 00f75a00cc84f09441887cce521dd58840d97f15765dc5d5af352fc836f65e78
font_01_sfnt_off000089da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DA 18228 bytes
SHA-256: 202894cb6a5bec519cb1aff7aa26487a29ece32a0cf0ce5d4249a64a0c567dc3

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