Malicious PDF — malware analysis report

Static analysis result for SHA-256 4379c0e284b795e6…

MALICIOUS

PDF

35.9 KB Created: 2021-06-18 02:29:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fcfe579118b1d29b709a38bbe0d05fe4 SHA-1: 551d91246d100a30a8f31f1f36b7f06c98990e76 SHA-256: 4379c0e284b795e6397d9395a11ef9a03b79a9e725165bfddfb49f000fc08c3a
82 Risk Score

Malware Insights

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

This PDF document contains a lure related to free game items and hacks, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a game hack redirector lure indicate a phishing or malware distribution attempt. No scripts were extracted from this sample.

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/things-that-are-for-free-in-roblox-game-hack PDF link annotation
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/roblox-girl-clothes-free_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/how-to-earn-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/how-to-hack-robux-with-es-file-explorer_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/roblox-reason-2-die-money-hack_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/roblox-how-to-change-your-name-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/roblox-profile-picture-free-to-use_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/aplicacion-para-hackear-roblox-i-tener-robux-infinitos_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/cpat-hacker-in-mad-city-roblox_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/how-to-get-200-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/kill-script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/roblox-becomming-rich-free_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/free-robux-quick-and-easy-2021-with-no-apps_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/a-code-that-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/connect-to-roblox-account-roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://holycrossintercollege.com/wp-content/uploads/fsqm-files/free-robux-python_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_off00003497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3497 22876 bytes
SHA-256: 688e286666c38ee96c23d1c6262a8cb6547975d539c09cee0f5d3e67e5bfb881
font_01_sfnt_off0000680e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680E 18856 bytes
SHA-256: 105c1a08c231fbf40366cff63ef1edc128480035b37302026ace76eeaea541e5

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