Malicious PDF — malware analysis report

Static analysis result for SHA-256 2959eca7f4aef870…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 16:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8207b67f0f541fe218fba343fb487957 SHA-1: 76c0ce3fcb1e5adc33d0c4adf8d2ccfc73facbba SHA-256: 2959eca7f4aef870016262d27b804a446a0a7616e20085d25afbdebfad77361b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a game hack lure. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-hack-app-game-hack, likely leads to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to trick users into downloading further malware or visiting a phishing page, consistent with spearphishing attachments.

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-hack-app-game-hack PDF link annotation
    • http://arhi-z.ru/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://arhi-z.ru/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://arhi-z.ru/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://arhi-z.ru/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/master-game_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/open-coin-master_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://arhi-z.ru/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://arhi-z.ru/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://arhi-z.ru/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://arhi-z.ru/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://arhi-z.ru/images/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://arhi-z.ru/images/free-robux-come_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_off0000483b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x483B 25492 bytes
SHA-256: 9b6add9edbdeae86865853295485523caa0a674d5464fc7a9092bcd76fcddad6
font_01_sfnt_off00008282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8282 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

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