Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da954caf691df79…

MALICIOUS

PDF

44.8 KB Created: 2021-06-11 00:12:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 30c750c85d2c9c08c9e8cf262c303908 SHA-1: 69e3696e0770ba86e7b5afa5a4c7b3768766abb6 SHA-256: 9da954caf691df790e55ae1392cb861af96057e7d4b673614e2303a70740d082
122 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, which is a common tactic for phishing or malware distribution. The presence of a fake CAPTCHA heuristic further supports the intent to deceive the user into performing an action. The embedded URL leads to a suspicious domain associated with game hacks and free generators, likely serving as a landing page for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.tw/app/431946152/free-roblox-toys-game-hack PDF link annotation
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/blox-best-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-online-hack-download_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_off0000516f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x516F 26160 bytes
SHA-256: 851759897174fb73fde4fcfc2154aaf79c8466daca356e4e6a88d446b238f161
font_01_sfnt_off00008d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D10 18128 bytes
SHA-256: ced59fa1f5966ac3cb16d2fbea4d1e317d998f5f31502ffb274740285f9cbd45

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