Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b522205823f6f0…

MALICIOUS

PDF

33.8 KB Created: 2021-06-29 03:21:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 87a39840f1321d1c1e885ec533b4dcb6 SHA-1: 1bd186753441bac4ef06c1d98656dbabaf0785d9 SHA-256: b7b522205823f6f0ef0256c358687fc00397de528263d735f3483a220ed56dbd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector, designed to lure users into downloading potentially malicious content related to game hacks and currency. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/wellhack-net-free-unlimited-robux-in-roblox-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-in-a-roblox-game_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/god-mode-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hack-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-2021-code_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-a-tool-in-fe-yield-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-catalog-free-oo_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/cheat-engine-62-roblox-mac_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/boosted-gamer-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-promo-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-robux-hack-no-verify_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_off00002aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABA 22736 bytes
SHA-256: f9f1dc6c1409156c108a1ea4109317a0d941dec82e89f6fda78b2d6d648f9346
font_01_sfnt_off00005cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBF 19984 bytes
SHA-256: d6687339474a3dfdc940a939c823314feed52be1b8a3d8960e73300df5da5a9f

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