Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef239413e717307…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 17:05:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 352492769de7b73891a167502448b6ba SHA-1: 00027b68103ea91fa103d0d4c55e54fe6b648fc8 SHA-256: fef239413e71730757aa20428f3d6ec7bb5a3e10c4c6c61764ef9427cb8413f8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to 'netcdn.tw', which is flagged as a redirector for game hacks. The ML classifier also strongly indicated maliciousness. The document's content and heuristics suggest a lure to trick users into visiting potentially malicious websites for game-related cheats, which is a common social engineering tactic.

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/431946152/20210-robux-game-hack PDF link annotation
    • http://ggmtc.net/userfiles/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-hack-in-roblox-pc_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/haktuts-coin-master-free-spins-2021_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_off00003358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3358 22380 bytes
SHA-256: 4694d04fe226862194bc8d675a1be13fd60f96bf43f7a1cab9c0a75aaccd8c7c
font_01_sfnt_off0000650e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 18956 bytes
SHA-256: 75ea27529c0c01066f51b2c4a610dacd0c00866775fa9ae9f69139e6484c1ffd

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