Malicious PDF — malware analysis report

Static analysis result for SHA-256 b559ce2509ec1510…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 21:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 60e0db7640a19dd54463c6e377da58d3 SHA-1: 42d06ddd897c3da1d82b847c5f1529361f600c93 SHA-256: b559ce2509ec1510f50feccbb68beee55639b9ef56322f81cf20b03072da65fa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites offering game hacks and generators. The primary lure is 'Earn Free Robux Today', which redirects to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or redirection attempt to a potentially malicious site.

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/431946152/earn-free-robux-today-game-hack PDF link annotation
    • http://vseslav.eu/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/coun-master_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/robuxy-com-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_off0000473c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x473C 24540 bytes
SHA-256: 8dfbc7a3cffd732578646565d2efe502f53dae6cdf7fcbba1dc0b5bd1b66417c
font_01_sfnt_off00007e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9B 18596 bytes
SHA-256: 856adb635f1df42b1ab7aec7f905735c2cb2dfebd4088312a1c80dc48447787c

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