Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa929a851b51cc0…

MALICIOUS

PDF

42.7 KB Created: 2021-05-15 15:08:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0d99fdc68100adaa071dfac07df92b43 SHA-1: ba0d4a31095d69e8cd046cb190954e8c1dd477d2 SHA-256: 5fa929a851b51cc0c04264ec23759affaf302d60a0dc7aa58b5f0f17f3ce5b06
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'free generator / game hack' lures. The ML classifier strongly indicated maliciousness, and the document body contains a prominent link to a suspicious domain. This suggests the PDF is designed to trick users into visiting potentially harmful websites, likely for credential harvesting or malware distribution.

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/479516143/free-modded-minecraft-server-hosting-game-hack PDF link annotation
    • http://dcmetroapp.com/images/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-hack-roblox-on-mobile_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
stream_003_off00004bb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB3 24984 bytes
SHA-256: 3525839692034e348c314549b89213626797f01009b5f57d893d7373a97fa31e
font_01_sfnt_off00008457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8457 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

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