Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9a0cba6b1e6825…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 14:58:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6f25e8c074911aad8117b6d3217cf1a8 SHA-1: a0bfa2bf42df556dd4c6fd2fe94f9fefbb397de1 SHA-256: ba9a0cba6b1e68258456a0a574f728c05cc6b66bce95f689215fcb5effd8ced4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. The embedded URLs and the document body content strongly suggest a social engineering attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to external content.

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/835599320/how-do-i-get-tiktok-for-free-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-island-royale-cheats-for-bucks_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-hack-no-scam_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-web-page_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/unlimited-robux-hack-add_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/big-brother-hacks-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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 21952 bytes
SHA-256: ed1736b8db7a560eff09d1e14df6b17889e07c859d25054804efe586e49c1789
font_01_sfnt_off000061ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CA 18304 bytes
SHA-256: 4938701dbf408e9072d3358cc6fafc7467a72b7afdd8e5665974615f806fa15d

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