Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7bfa2c2b8e9c864…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 01:59:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a1e92ad31e3458c7e61fc4c9ed6bdaed SHA-1: 73761983397a3cbbaf364794fc46076b760dfc8a SHA-256: f7bfa2c2b8e9c864d76caa526f0a2a2c298e12815a347781fdb77f315ca606f4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and free currency, directing users to external URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates a high likelihood of redirection to malicious content. Although no scripts were explicitly extracted, the nature of the lures and embedded URLs suggests an intent to trick users into downloading further malware or engaging in fraudulent activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-money-in-roblox-lumber-tycoon-2-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-make-stuff-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/bypass-roblox-cheat-engine-detection_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/earnrobux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/robux-hack-2021-on-laptop_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/is-there-any-way-to-get-free-robux_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
font_00_sfnt_off00003121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3121 22288 bytes
SHA-256: 455b9765be93adc3f05b4a31671cd04e9709fc2747e89f53a686a8dc7efd54e2
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 19816 bytes
SHA-256: 0cfe637dd44c1a2add9bf948d8d69020cc156d7162e62bbbc4399331cde5c26c

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