Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ab74f1b4e22a36…

MALICIOUS

PDF

43.7 KB Created: 2021-06-04 01:03:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ca2947229c7478b6ac77a7399523c906 SHA-1: 97d83fbefdbe6716b3aa80587a5119aaf5678526 SHA-256: e4ab74f1b4e22a364a35663f76bbd4dfd3fd43953e5b2ca8ba47715000e166d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lead to websites offering 'free generators' or 'game hacks', a common lure for malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a phishing or scam attempt, likely intended to trick users into downloading further malware or revealing sensitive information.

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-links-coin-master-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-gift-cards-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-life-hacks_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_004_off00005061.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5061 25016 bytes
SHA-256: 79118a0a4ee60280377e634c4e2109f16cdd0674f1f7176923268d50da4ad349
font_01_sfnt_off000089a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A0 17880 bytes
SHA-256: c5130e18caf6f7222c4492e4e2e2fc6b4580e14129763dcab090a363ad6db2dc

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