Malicious PDF — malware analysis report

Static analysis result for SHA-256 560bffe42e9479e4…

MALICIOUS

PDF

35.2 KB Created: 2021-07-02 08:37:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e8bfd26afd39481e7f04260971e5f8a2 SHA-1: ec3d33131293aa0884d3f261f1b170638690d3e9 SHA-256: 560bffe42e9479e490fbe1821b421b20fa5cc641fa4b0ed4af036abf8a619bd5
82 Risk Score

Malware Insights

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

The PDF contains a lure related to game hacks, directing users to a URL that likely serves malicious content. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interest in game cheats to deliver a payload or redirect to a phishing site.

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/how-to-report-hacking-on-roblox-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/hacks-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/interfaz-de-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/comment-devenir-un-hacker-sur-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/game-guardian-roblox-invisible-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-free-gift_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pokemon-go-free-pokemon_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-com-free-account_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-accounts-with-obc-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/what-pubg-uc-buy_GM1330123889.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/wahoo-gaming-co-free-robux_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_off000031fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 22424 bytes
SHA-256: 96c9fce3761c61adbccb4400b7b60a20e6f673a5e3a8c47c122b4e026c133c97
font_01_sfnt_off00006400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 19220 bytes
SHA-256: 280d27c6ea68ec71f12c7c9dccdd9c66557b96e50c429874d26c5c9c70a8571b

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