Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2c260da073126e…

MALICIOUS

PDF

42.6 KB Created: 2021-05-20 00:36:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1f01200f2dd933e0d0fda1ce9a4b6155 SHA-1: 17a843f56b683a95d4336225dccc9b2aa3c8505e SHA-256: 4a2c260da073126e5771a63f0c37c039a3c950ae589d4643c68a3acca3213824
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to "Coin Master Game Legitimate Hack" and includes a high-risk redirector URL. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-game-legitimate-hack-without-signing-up-or-shareing-game-hack PDF link annotation
    • https://www.bumbar-sport.hr/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.bumbar-sport.hr/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004894.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4894 25032 bytes
SHA-256: 15dae48926f85bcf85b87e92c1c5153c553f29a3a0110bf9910b84443834cb71
font_01_sfnt_off000081aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AA 19128 bytes
SHA-256: dc9a87bd67df9bb84126e25e8cfd6c542a2bbbef26e11d73549ffc23dff564de

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