Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b0798f4912313f…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 08:15:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 66436cb2450fda0a589532f86f87201c SHA-1: 594dcb50418bfa1afedeb8af7665d99ebd8b56f5 SHA-256: 14b0798f4912313f504f5b7b514c70d3b0f69873b91d9e6ded5f76473347f349
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 0.9980

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/431946152/roblox-free-login-game-hack PDF link annotation
    • https://razredna-nastava.net/files/robux-free-generator-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-shirt-copies-on-roblox_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-2021-no-download_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-for-bloxburg_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-a-game_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-ultimate-gamer-365-new_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-claim-free-spins_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
font_00_sfnt_off00002c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1A 22132 bytes
SHA-256: df84b367fe5b9371f414b8d7e472ce3a4e1310035d2900a579ffc801016c8eba
font_01_sfnt_off00005d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D37 18768 bytes
SHA-256: 3ce8be4880d2e640c461e0be36dec2589727c8dce42bba909195498f293817a6

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