Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f430d3d0eac8d8…

MALICIOUS

PDF

48.1 KB Created: 2021-06-03 08:34:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1748f2cafec2a03d62c61798410d3987 SHA-1: ce6b0106c23bc86a30d401d7481399a12da9cffa SHA-256: c2f430d3d0eac8d8a48fc2271ee685cd4332d0981edc5706c2d82775937037a3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one that directly advertises 'robux-free-robux-game-hack'. This lure, combined with the ML classifier's high confidence score, indicates a malicious intent to trick users into visiting potentially harmful sites. The document's structure and embedded links suggest it is designed to exploit user interest in game-related cheats or virtual currency, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/robux-free-robux-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-giveaway-live-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-bonus_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_off0000534f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x534F 31888 bytes
SHA-256: 484c348112d3fc85d82624a7a9f0243eb03beefc630e75f91952b1f759e2c8c5
font_01_sfnt_off00009ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB9 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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