Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00454b0454dcc44…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 01:52:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fb1f5b43d8a5f626873c41f91896c5de SHA-1: 6da2a472a81a219f206ec092f1b337a76b4d1b51 SHA-256: c00454b0454dcc442b052d028ecc8343e76503e1433c02dbbe71fd89dac71898
82 Risk Score

Malware Insights

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

The PDF document contains lures for game hacks and free currency, directing users to external URLs. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to a game hack redirector. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest an intent to redirect users to potentially malicious sites for further exploitation or scams.

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-free-spins-link-march-2021-game-hack PDF link annotation
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-severva_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/robux-hack-2021-pastebin-working_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/cheat-roblox-skin_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-developer-console-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-sign-up-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-codes-2021-april-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-robux-2021-no-hack-or-download_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-autoaim_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_off00002fdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FDD 22732 bytes
SHA-256: fc25c7ffd4d8dce06de027236fdbb8ffd849af1151eb2dec704fbbc66e7c0b32
font_01_sfnt_off000062a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A9 18912 bytes
SHA-256: bdaeed2a2d35cd5403fa884150965b7cf2968e80c04f285ab32196e93ef33165

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