Malicious PDF — malware analysis report

Static analysis result for SHA-256 d81def13055cf1e5…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 13:34:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b8cec71170a0a1dabc3705ee3c8de429 SHA-1: a263469379cd98649f277688e95e11065f5e4b01 SHA-256: d81def13055cf1e5bf0d19d7d074a72a2bb4c46c7a5bcb3d8a6c8baeefda319b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free spins, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/free-spin-coin-master-apk-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-spins-for-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
stream_004_off000051cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CC 25132 bytes
SHA-256: 6568a0a2426698f5df62eb0fea5481b7220b67dd349bc9e8e0e8dd2424b0dab0
font_01_sfnt_off00008b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3D 18056 bytes
SHA-256: 7f2e174e1afd465ef12bc01317bb6b03aaf654ca66d004136e98d06ab5dd2bbd

Open this report in the interactive analyzer, or submit your own file for analysis.