Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea9c6334abb1f93…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 08:04:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1fec8b037230ed1e598c5ce2c90f07b SHA-1: 28699ba3aac5af4bab3576cd37183e34218f3035 SHA-256: fea9c6334abb1f93af56655b015e530a0cee18c968ee42c85d9d09511fb50ff0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that redirect to websites promising free in-game currency or hacks for popular games. The primary lure is for Coin Master and Roblox, suggesting a social engineering tactic to drive traffic to potentially malicious sites. No scripts were extracted, but the embedded links and the nature of the lures strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-group-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/hoe-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-win-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/tener-robux-gratis-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-no-verifying_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/does-roblox-give-obc-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/yummers-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-cheats-november-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-pe-hack-client_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
font_00_sfnt_off00003230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3230 22616 bytes
SHA-256: 1282598b6a0836325d42261e1072ff9b63127fce0dae07d998cc0cc34a660d82
font_01_sfnt_off00006484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6484 18488 bytes
SHA-256: fb59b1f5ad3b1d78d5ae9c71c2b2cb39d8a8a8878e6ccc76b5c7eaa0d92d8094

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