Malicious PDF — malware analysis report

Static analysis result for SHA-256 11cf819b8c67c977…

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 01:04:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 306600223ef54a62db2612213756daf0 SHA-1: d671138e83d407c9fa0f6b65b42908b166c9f9ee SHA-256: 11cf819b8c67c9770af8ecb27346386fcf03953f5eec2cd202693a735a012147
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacking and cheats for popular games like Roblox and Coin Master. The presence of a "download button" lure and the ML classifier's high confidence score indicate a malicious intent. The document likely serves as a lure to direct users to download malicious files or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/roblox-template-download-free-game-hack
    • http://www.taxiaparis.fr/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdf
    • http://www.taxiaparis.fr/images/minecraft-iphone-free_GM479516143.pdf
    • http://www.taxiaparis.fr/images/codigos-para-hackear-cuentas-de-roblox_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-ways-to-get-robux_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-tiradas-gratis-2021_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
    • http://www.taxiaparis.fr/images/dreadguard-roblox-hack_GM431946152.pdf
    • http://www.taxiaparis.fr/images/how-to-make-your-roblox-game-famous-for-free_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • http://www.taxiaparis.fr/images/robux-boost_GM431946152.pdf
    • http://www.taxiaparis.fr/images/get-free-robux-generator-parts-pokemon-silver_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-roblox-exploit-no-key_GM431946152.pdf
    • http://www.taxiaparis.fr/images/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-to-get-free-robux-no-inspect-may-2021_GM431946152.pdf
    • http://www.taxiaparis.fr/images/how-to-hack-tycoon-cash-on-roblox_GM431946152.pdf
    • http://www.taxiaparis.fr/images/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://www.taxiaparis.fr/images/play-roblox-for-free-on-google_GM431946152.pdf
    • http://www.taxiaparis.fr/images/live-free-robux-codes_GM431946152.pdf
    • http://www.taxiaparis.fr/images/minecraft-bedrock-free_GM479516143.pdf
    • http://www.taxiaparis.fr/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030b9.bin
7a75c41155a0e3328211431c880087259879b6e59f70ad658f9aae937a9bc706
pdf-font-stream PDF embedded font (sfnt) at offset 0x30B9 22804 bytes
font_01_sfnt_off0000637f.bin
1a9d6f2c65142d4490138e3024fb39cd20a087e2e92fe58aa5daff5d20ae91e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x637F 19508 bytes