Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4255034a1f50fe…

MALICIOUS

PDF

34.3 KB Created: 2021-06-17 16:57:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e1b8aab7e2577055abb1a136b8e78baf SHA-1: 66ab6983692da2b9df41d36c63175296dde6eb91 SHA-256: ae4255034a1f50fe7030ba4d25e3cd1e3ea25d7276c7f7575c5340bbeb0636e8
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a lure for 'free Robux' or game hacks, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of external URIs and the 'game hack' lure suggests the document is designed to redirect users to a site that may host further malicious content 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.co/app/431946152/how-to-make-free-robux-game-hack PDF link annotation
    • http://xn----7sbq6amdnuk.xn--p1ai/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-robux-v3m_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-free-robux-earnrobux-today_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-dominus-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-download-minecraft-for-free-on-windows-10_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_off00002fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDE 22192 bytes
SHA-256: 88a0cf6c7075056512711eff735772008013524adcd0ab17c5d58867c435ffb0
font_01_sfnt_off00006115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6115 19060 bytes
SHA-256: dbc004459b20264744b0958f12261b187646405c4c9e3e32c04332514ad9a0ac

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