Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0f6f04afc4c20b…

MALICIOUS

PDF

43.3 KB Created: 2021-05-19 08:50:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: dcfbc2e5e8a887623ea9abc3c6e81e21 SHA-1: 174488601bc2c6716c0939d850e9445a02f87476 SHA-256: eb0f6f04afc4c20b0771099c2b2ceadd92bb7e80debc0c4333850b25e24fbcc3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/free-spins-coin-master-blogspot-game-hack PDF link annotation
    • http://dcmetroapp.com/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-using-lucky-patcher_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/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.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_off00004892.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4892 27996 bytes
SHA-256: 03910c0c279a64716d196f54c8c070e4ae15c930cccdc1ddf597cbc5e75eddde
font_01_sfnt_off000086a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A8 18464 bytes
SHA-256: 1c6dfc1f98a6641c171a543c2046344b7d819ff3e085ab3ae56c0ac3320f4f50

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