Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc49477de44f848…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 18:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 040aab6d48d011f8482b1e93b49514e4 SHA-1: 5eeb4da5e26b606cff115e93d0083348ad80a138 SHA-256: bfc49477de44f8487568f58e2eba52511680d9d0816ae8656c7ae1bef894b1f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple lures related to game hacks and free in-game currency, directing users to external URLs. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the nature of the lures suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/how-to-duplicate-coin-master-spin-hack-game-hack PDF link annotation
    • http://galletta.com/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://galletta.com/images/app-master_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/robux-claimer_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://galletta.com/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AE 24504 bytes
SHA-256: 036cce7671e0650e306a3696c115526e9588bd1b22975269f2a10b193c47478a
font_01_sfnt_off00007ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000089a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A4 18436 bytes
SHA-256: 63f0f1c978d8f92ee707179f18d26c907503c05d135115955c3f0d9e37ea33fa

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