Malicious PDF — malware analysis report

Static analysis result for SHA-256 0621393c5e29f0a3…

MALICIOUS

PDF

46.1 KB Created: 2021-06-04 01:35:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2ece60e7c538a5e5ee98a38741d2bef6 SHA-1: 2b77e840dcb9b9fc07c3f6b6f568c2a55d6cc564 SHA-256: 0621393c5e29f0a3e956c827dbf92a9b185cda9e1fbccb5499e80fdc4652830d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free generator / game hack' and includes embedded URLs pointing to such content. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely leading to a malicious download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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 https://netcdn.online/app/431946152/free-roblox-clothes-templates-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004cc8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC8 25152 bytes
SHA-256: 8ce9dd83a18331d24237e0a2e5c64aca7254860cd47ed07f77856b6846f93d40
font_01_sfnt_off000085e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E1 2844 bytes
SHA-256: d4efd49219a7ff6424c923a6ccef5b7e1750ded18bbd79546f2ad196ddc76c43
font_02_sfnt_off00008fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA1 18884 bytes
SHA-256: 640c63db932491e4e87d0cbe8bcafce8540653682ab1762ebca962469be3fa30

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