Malicious PDF — malware analysis report

Static analysis result for SHA-256 979ec6513c8a5cec…

MALICIOUS

PDF

32.4 KB Created: 2021-06-28 05:40:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 952096e7e8dd5f9c52969a56434f5cb6 SHA-1: 124e610fc62758f8974e0a368b0203a5a0a61050 SHA-256: 979ec6513c8a5cec78db0668e83e38149e5f61c711675c4bbfc7d27c7de09fb3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a call-to-action phrase, 'CLICK HERE TO ACCESS ROBUX GENERATOR', designed to trick users into visiting malicious websites. The primary lure is related to game hacks and virtual currency, a common social engineering tactic. The ML classifier strongly indicated maliciousness, and the embedded URLs point to suspicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/good-robux-hacks-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-robux-420-apk-az_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/t0pk3k-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-aand-true-ways-to-get-robux-windows-10_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-android-step-by-step-anddoid_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-speed-hacks-that-u-can-type-in-chat_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-easy-and-fast-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/i-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/2021-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_off00002945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2945 22128 bytes
SHA-256: faecfe1d148c5c87b30386cd6c3686146036a42c40a0ebd868bb57a3b68f710f
font_01_sfnt_off00005a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A51 18896 bytes
SHA-256: 1cfe4ceb215e7a1f7aeb881752900af6001e57cb39ab7025730be10189f366bb

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