Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51f3609399985b3…

MALICIOUS

PDF

43.7 KB Created: 2021-05-10 23:39:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 265103e50b53e29db3f66289fdd5b6d6 SHA-1: 56a64ef7b9bc476c5920af00866a00d9330961cc SHA-256: d51f3609399985b3271604267b6ad44a5c97cfe32a38cc009b93ef67336f6f09
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to websites offering game hacks and generators, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the links. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to lead the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-hack-a-minecraft-server-and-make-yourself-op-game-hack PDF link annotation
    • http://dcmetroapp.com/images/real-roblox_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e83.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E83 25124 bytes
SHA-256: 8a20c50dfb6606b8c6622e48d43c939dce52f5712e62342669e6e1665ff4b1e6
font_01_sfnt_off0000870d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870D 18884 bytes
SHA-256: c6c75348c8512da505ae943a266b7446b2e14ebdee3fe9748eb8d749779a3ee4

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