Malicious PDF — malware analysis report

Static analysis result for SHA-256 e023eee7ec52c1ba…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 05:40:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 76d1f815c8ed3a22045d7b6a5d4abe98 SHA-1: 3cf97f52c128addf7c9aa856e74df92725fde82f SHA-256: e023eee7ec52c1baf39382b846cae15705e95e2c3467df037c035a640c1ffa92
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites promising game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent. Although no scripts were explicitly extracted, the document's structure and content suggest it's designed to trick users into visiting potentially harmful sites.

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/free-coin-master-coins-2021-game-hack PDF link annotation
    • http://lib.unwahas.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-free-online_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_003_off00004a8f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8F 24488 bytes
SHA-256: bd8e5c15c1de04ec295fc8dee252a6510ad74f300f37b68c245d8486d4b5e5f4
font_01_sfnt_off00008226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8226 19440 bytes
SHA-256: 3fc4082cf93adf64d78a34e6bbf444c9c1f803c39ae473ebf9f221ee2d1fd942

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