Malicious PDF — malware analysis report

Static analysis result for SHA-256 758ffeb2a3c34f52…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 00:10:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8e054204f4f8d5a708de39e7ef45bf63 SHA-1: a9999e8470a23f881dc5d2c2e1f607f9d7c644be SHA-256: 758ffeb2a3c34f5273c2bc3fd8aadc2ce04578bdeaad98605dd87246c13139e4
82 Risk Score

Malware Insights

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

The PDF contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains the same URL, reinforcing the lure. The ML classifier strongly indicates maliciousness, suggesting the PDF is designed to trick users into visiting a site that likely hosts further malicious content or exploits.

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/431946152/roblox-rape-hack-game-hack PDF link annotation
    • http://mb.its.ac.id/rbmb/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/promocode-hack-for-robux_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/free-robux-code-2021-roblox_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/free-robux-hack-no-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/hack-roblox-injector_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/tiktok-free-speech_GM835599320.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/hacks-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://mb.its.ac.id/rbmb/repository/how-to-hack-other-players-on-roblox_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_off00002d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D84 23236 bytes
SHA-256: d3c91b9cf2348c6543f86ac574d9a4ce4c621658cc8fef3d1c8073ac6b4eb8bc
font_01_sfnt_off000061d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D2 18832 bytes
SHA-256: 3ac3cfabc938180400d0abf1f56cc3fab268d3e1a7375c8f9738c83b811e0b8b

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