Malicious PDF — malware analysis report

Static analysis result for SHA-256 b91cbc86c7c3fa9c…

MALICIOUS

PDF

42.1 KB Created: 2021-05-18 04:31:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6a9dad96bd93947e6238b1db96327164 SHA-1: 1ba0d6bdaa1f422562cebb586c9610cf21bcb1ed SHA-256: b91cbc86c7c3fa9cc33efbb81a223ab706808271eb1d3cd9bd2ba98f74651ccc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacking to entice users to click on embedded links. The primary malicious link identified is https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-2021-game-hack, which likely leads to a malicious site or download. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interest in game cheats to redirect them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-2021-game-hack PDF link annotation
    • http://scuttworksdesigns.us/images/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.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_off00004775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4775 24480 bytes
SHA-256: a93712bcbfa479f59b9c3bc0127513eec973725849201af9d23bf5b45a2b6b12
font_01_sfnt_off00007fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB1 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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