Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bbf6d33f1f8bef5…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 05:50:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 93dfd6d5a7544580622563fc7d8a4288 SHA-1: aa175c094f9774de3ed3bd96094639c91a4748c9 SHA-256: 9bbf6d33f1f8bef5cb04d60ec00bd41c0971cce86c3443469facc907c3c51fe5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-free-robux-tablet-2021-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-real-gift-cards-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/wahts-best-lvl-7-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/pastebin-cheat-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-and-tickets-in_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/elemental-battlegrouds-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-cash-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-premium_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_off00002a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6A 22816 bytes
SHA-256: 3354ee4b4b246fe272e89b9c68a2135914cd634efc8254fa904b3b5f286bb0ae
font_01_sfnt_off00005d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D48 19460 bytes
SHA-256: 287edc354311a95f8fbab0bfcc42ad27fed3020b8195515396c9c700e8e7725a

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