Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d9b30929715293…

MALICIOUS

PDF

37.0 KB Created: 2021-05-20 15:50:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7b949d482056425b04a62f59eaad6fa6 SHA-1: bddf88cee668465d42a677a6b9d1fa4ff73b1c54 SHA-256: b1d9b30929715293893f40e70b6065f26593bdd09022806cf0aa665668672179
82 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, including one that explicitly advertises a 'roblox-hack-apk-game-hack'. The document body also contains text and a button lure related to downloading a hack tool. The ML classifier also flagged this PDF as malicious. These elements suggest the document is designed to trick users into downloading potentially malicious software disguised as a game hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/roblox-hack-apk-game-hack PDF link annotation
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-without-verification-2021_GM431946152.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_002_off000032a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32A8 26600 bytes
SHA-256: 9823acabf431cf44de5be6b332cf091f77550fa4cac828e45f7d30f794ca7e6a
font_01_sfnt_off00006f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F10 18356 bytes
SHA-256: 7cdc4109e76722f5b523df4cd1b295e2212ddbe91aca110ba626f8c95e058f26

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