Malicious PDF — malware analysis report

Static analysis result for SHA-256 8627fdbb7d5c09f0…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 15:00:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7549ffd3f2356989ea02805299098d2e SHA-1: eb93de205d7030ee68f22252876d8134afcfaa9f SHA-256: 8627fdbb7d5c09f00278086f9f2c14f0dcca46004d6ce2b184b93aa3a827b6b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links and a high-confidence heuristic firing for a 'game hack' lure, specifically directing users to 'https://netcdn.xyz/app/406889139/coin-master-free-spins-link-game-hack'. This indicates a social engineering tactic to trick users into visiting potentially malicious websites. The document's content and structure strongly suggest it is part of a phishing or scam campaign.

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-free-spins-link-game-hack PDF link annotation
    • http://www.vktzunami.cz/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://www.vktzunami.cz/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/roblox-rape_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/how-to-hack-people-in-roblox_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
stream_003_off0000497b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497B 25352 bytes
SHA-256: 22403ed3b6e25aaf5826f9a3b14d98c2ef9cbea29733cf0630c37d4bcfa387ac
font_01_sfnt_off0000828f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 18056 bytes
SHA-256: a4f33549350803e8a819cbfad6b4ff3cdc0b302ceab74af9f2f663eab6bd9ec0

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