Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4aa85c81ddbc8c…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 16:53:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 41fd013e7ed7f6bedb9add6784c04984 SHA-1: 777f3a386245a3716c656913642a55dca9f147da SHA-256: 3e4aa85c81ddbc8c8af5a87b998aa21cbe4d9e4826beacc4c8a18d4bcbdf2062
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure for 'free Robux' and game hacks, indicating a social engineering attempt to redirect users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the 'game hack' lure suggest a phishing or scamming attempt.

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/free-robux-tutorial-no-human-verification-or-survey-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/how-to-hack-one-mill-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-how-to-make-face-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/tiktok-free-view-quest_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-robux-inspect-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-get-free-robux-online_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-hack-a-roblox-account-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-meeting-center-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-pet-food-on-coin-master_GM406889139.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_off00002fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD0 22072 bytes
SHA-256: eb131bff12820a752d7bd0a1855ad563c41aa6db1c6b3711b49e5a1bc20e3884
font_01_sfnt_off000060d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D1 19700 bytes
SHA-256: 11ed906e44efbbb416cd41d9144e4fd0c8b64633714214c2967b24c38a4595fb

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