Malicious PDF — malware analysis report

Static analysis result for SHA-256 6400e436a0b83072…

MALICIOUS

PDF

48.3 KB Created: 2021-05-11 06:07:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a0dbb4ef4bfd6c42ce889a88c9f4f614 SHA-1: e4a96ed9cc9051692c603db7922ab11b109fc326 SHA-256: 6400e436a0b8307245d5f18fa1e84e59d24efc64469d2aae716b5bc331345b4c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent link to a 'free generator / game hack' redirector, indicating a lure for users interested in obtaining in-game currency or cheats. The ML classifier also flagged this PDF as malicious. The presence of these links suggests the document is designed to redirect users to potentially malicious websites for scams or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/431946152/free-robux-android-game-hack PDF link annotation
    • http://enosiderma.gr/images/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://enosiderma.gr/images/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_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_off00004768.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4768 37304 bytes
SHA-256: f84d1aef9f7056182caf77e7faefdcd427c076c262fb3aefcd710a8ffe758cb6
font_01_sfnt_off00009ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB9 18308 bytes
SHA-256: 3d682ae06d788585f0d48ef4471ddbfed33e391fd6a867cb0ce2fb595824b3ec

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