Malicious PDF — malware analysis report

Static analysis result for SHA-256 6693ab75ec06ed45…

MALICIOUS

PDF

43.8 KB Created: 2021-05-11 00:02:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: eeb518e59aaaf9d9d0a9d9829f03277c SHA-1: df576ae2bc101c4973519924885009972105a4d9 SHA-256: 6693ab75ec06ed4592013f58920688bbde78d6068e663fadcfb086b81d998da3
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/coin-master-hack-no-human-verification-2021-game-hack PDF link annotation
    • https://miraller.com/upload/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/microsoft-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/master-game_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-java-server-hosting-free_GM479516143.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_off00004ef1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EF1 24908 bytes
SHA-256: 9d7ce632db810abb9fc097c69d0d47fa31fcc7bb570962a5a8c825449fc9f05d
font_01_sfnt_off000087e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E2 18652 bytes
SHA-256: a8ac93ce14fdca52a5b6c8b5e666cce4eecb8a0a07e33e24ccf8b934d9dd8f42

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