Malicious PDF — malware analysis report

Static analysis result for SHA-256 38bd3f8b6e0841c9…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 07:14:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5fb884e107e58b313f296d61ac20e33f SHA-1: 4e015b8c0c0fb4f5febd79c63188b3121892b7b8 SHA-256: 38bd3f8b6e0841c97004d2a3e8087fc249a6225b71f124ecbfec3058c275c945
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a game hack lure to entice users into clicking malicious links. The primary link directs to 'netcdn.tw', which is associated with game hacking content, likely serving as a redirector to further malicious sites or scams. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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.tw/app/479516143/minecraft-bedrock-edition-hacks-game-hack PDF link annotation
    • https://ourlady-elearning.com/userfiles/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-digimon-aurity-cheat-engine_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/gamefly-free-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/hack-como-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-hack-and-get-free-robux_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_off000034fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34FB 22292 bytes
SHA-256: 1c417407c5d94c285cb2fb47a95cd882147f1f81e6eb38d23dde7e306e438fd5
font_01_sfnt_off00006666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6666 18560 bytes
SHA-256: c6086f00a80ac9dd1c4663510e3c0a85256bf03437e56001caa3ddad15db1f6f

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