Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f26a72745e72b7…

MALICIOUS

PDF

34.0 KB Created: 2021-07-02 03:12:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1b9bf637a4dcc8d18963b935d374dff4 SHA-1: c1f7c6e5517e78edb0a5699b3966f520f14aa40c SHA-256: e3f26a72745e72b78767f83be243f6320dc6f91fffcec63dd615a92290c4a6c0
82 Risk Score

Malware Insights

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

The PDF document employs a common lure of offering game hacks and free currency for popular games like Roblox and Coin Master. It contains multiple embedded URLs pointing to external sites, such as http://netcdn.co/app/431946152/roblox-jailbreajk-new-hack-game-hack, which are likely used to host malicious payloads or redirect users to phishing pages. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of harmful intent.

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/roblox-jailbreajk-new-hack-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/hack-somebody-on-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-roblox-bop-it_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/is-tiktok-free-to-watch_GM835599320.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/mad-city-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-cheats-for-tix-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/actual-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_off00002e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3B 22084 bytes
SHA-256: b9484b0c8aa41fa68c9ad3ed1d24d7611c4640fe47cf69f2429f5b06baf11de5
font_01_sfnt_off00005f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F19 19296 bytes
SHA-256: 7263a73497f8d5912b160f99a5481ce06fe18cc85d0a4e5f4210f2fc127ef9e7

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