Malicious PDF — malware analysis report

Static analysis result for SHA-256 958decd1088a8bf2…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 13:29:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 69036390e83e988c14283723ce259405 SHA-1: ff69cc425ac8ddf77d061bc52ad37549e8c05906 SHA-256: 958decd1088a8bf2a18ac48b4966338688ef9a4412be8e8ca7d9f61a156063f3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Roebucks' and game hacks, directing users to a malicious URL. The embedded link is designed to trick users into visiting a potentially harmful site, likely for credential harvesting or malware distribution. While no scripts were directly extracted, the PDF's structure and embedded links suggest an attempt to exploit user interest in free in-game currency or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/free-roebucks-game-hack PDF link annotation
    • http://digilib.stiki.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://krnl.rocksIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2D 25920 bytes
SHA-256: ac9193a358412f124aefd62fd80198def0c42be0470b1ccd171b369d491a2e2f
font_01_sfnt_off000086ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CA 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000907b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907B 17972 bytes
SHA-256: 60768b29a45169123c775a336c15772b774497df18e699e4ee663c92ad74688c

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