Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc254df0bc4df71…

MALICIOUS

PDF

44.2 KB Created: 2021-06-08 22:00:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 69a16963739f1632b76c7529809d5f06 SHA-1: c21c6ca872afb0170df16c473159da770cb694da SHA-256: 3cc254df0bc4df71779c8fd72c6e18ef61f990de3d7fdbde6812854ba3743b69
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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.tw/app/431946152/hack-roblox-prison-life-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-lumber-tycoon-2-hack-windows-7_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.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_002_off00004afd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFD 26996 bytes
SHA-256: 14af286def851ce803006e1d3ddf16db2e1aceb7109f4fdc008846a2a4e927da
font_01_sfnt_off00008a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A71 18456 bytes
SHA-256: fdce39d00c747d81c0bed22602258809f3d5895638c77e0ae9c71d18352e143a

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