Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cef3a9c29fa9e8…

MALICIOUS

PDF

48.8 KB Created: 2021-06-04 01:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7034d41d17be7f1b587d6c0e12980552 SHA-1: 72e3f2cc617cd500fbcb9bdbe17023476ea8b39c SHA-256: f9cef3a9c29fa9e85990d57ec22dcb6a8016da70689cb396052a260c00723965
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/roblox-cheats-admin-commands-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005338.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5338 31296 bytes
SHA-256: 914391ad9872b15bf1d01eb187680367542115b9dd2f42fd1b139a259906e1f7
font_01_sfnt_off00009acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ACC 18836 bytes
SHA-256: bb8be553f8bacd1a357b010eb741e9b880082c2aa65597e87a4493415eee4dff

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