Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe6e4c71ba1eb2e…

MALICIOUS

PDF

34.3 KB Created: 2021-06-20 02:33:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ad812a7f8d06162322d3a0d61817da9a SHA-1: 026f17c871162398d18c77886ba1e88df5df4f80 SHA-256: bbe6e4c71ba1eb2e40b0304f6d40269a09e7f9700d9e5653b39261596261cef0
82 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, primarily offering 'game hacks' and 'free currency' for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the ML classifier strongly indicate malicious intent. The document likely serves as a lure to redirect users to malicious sites that may host malware or phishing pages, exploiting user interest in game cheats. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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.co/app/431946152/how-to-make-a-free-ad-roblox-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/free-robux-no-human-verfaction_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/ben-10-roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-cheat-android_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/shirt-roblox-2021-free-dowload-transparent_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/impact-hacked-client-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-roblox-hacks-on-mac_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/rbx-hut-promo-codes_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
font_00_sfnt_off00002e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E50 22460 bytes
SHA-256: a6a54d4a5cf9ca1b0a6034faa877a5916a9a723dbd2d5712f264be9228541616
font_01_sfnt_off00006033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6033 19356 bytes
SHA-256: cabbe48f47f6acad4638795a7bc5d901bbabdb86737ba4cde3bdc4119479b811

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