Malicious PDF — malware analysis report

Static analysis result for SHA-256 19aed68d812f5e0d…

MALICIOUS

PDF

39.4 KB Created: 2021-05-23 19:37:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d9ebfff8e34f193d3dfb425e9390850b SHA-1: 651d8ba662a538119c02e9a0d70b056b03c79ec7 SHA-256: 19aed68d812f5e0d384acaa715a7710fafb67b1bcf42fb324dff15ec062a32f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a prominent call-to-action related to 'free game hacks' and 'generators', strongly suggesting a lure for malicious content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, and the presence of numerous suspicious URLs reinforces the malicious intent. While no scripts were directly extracted, the PDF structure itself facilitates the redirection to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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.xyz/app/479516143/how-to-get-minecraft-dungeons-for-free-game-hack PDF link annotation
    • http://floreswindows.com/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://floreswindows.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003581.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3581 24516 bytes
SHA-256: 7fea400115af2c2bb828209fe82b5b4cead769d24c76edcbfc396fea0ea6f205
font_01_sfnt_off00006dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC6 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000077d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 18472 bytes
SHA-256: 65ee82f26cafa7906902f4dbf8f4098f0781a130d3f16ad2d63d9ccc83542dd0

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