Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b176575fec0456…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 23:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4788e75be459a0eb751234b28bec6be6 SHA-1: 4a3a80c980a53709e7db45e72f8819dc532d1826 SHA-256: 57b176575fec045609f0f0f97f804efe9307fbfa3d125102a17e1e6ca503292e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically targeting 'Coin Master'. The document body and extracted URLs reinforce this, pointing to various game hack and cheat sites. While no scripts were extracted, the primary attack pattern involves luring the user to click on the malicious URL, likely to download malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-ios-download-2021-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-discord-servers_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
stream_003_off0000488e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488E 25244 bytes
SHA-256: b7541b760dcce023d8fe67978eb731c541509032da4925b58dd16c93c52586ca
font_01_sfnt_off000081a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A4 18696 bytes
SHA-256: 11ecf461d2f98c74c154dcc560692411ec3e38438efbd345bccaad7f825d81b7

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