Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ea7299b082e478…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 16:13:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 05729ccb934dee3e4409fddc0174e8a0 SHA-1: abea9d26a5d27664890c83d13bc3185ef530b9d1 SHA-256: f3ea7299b082e47830db36bae313b81f15a578416f3ce4b5cab4e64b88ea5a21
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites that offer game hacks and free currency, a common lure for phishing and malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. While no scripts were directly extracted, the document's structure and embedded links suggest it is designed to redirect users to potentially malicious sites that may host further payloads or exploit kits.

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/479516143/minecraft-realms-free-codes-game-hack PDF link annotation
    • http://autoskola-scp.com/files/como-tener-robux-hacks_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-its-free-commercial_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-lua-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-roblox-apocservers_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-stuff-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-money-hack-no-human-verification-works_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/skywars-roblox-hack_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-1-million-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/what-is-robux-in-roblox_GM431946152.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_off00002dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFB 21880 bytes
SHA-256: c6b3e90e3a5b71dc5419baee53e56fa3866da28b07dfa7ff206380cef35a57e1
font_01_sfnt_off00005e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E02 18508 bytes
SHA-256: df10bd94edc5891a154685fbdda3a803e57035b64e9c0e6d7a5459cca4336595

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