Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f06f27f5f0a0cb…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 13:13:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe52eff971745d0f1b73138cb18697b1 SHA-1: d231906a6a014d04012ff1ecbb22b2bdf9f4b044 SHA-256: b9f06f27f5f0a0cb04fc54a67f1d7eb2048f52af6f9449e265f2d36fd3a8da63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://netcdn.xyz/app/431946152/get-robux-com-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-without-downloading-anything_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_off0000496a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x496A 25540 bytes
SHA-256: c8f9a781d637490fa3aff489bf966c717f7af677c5dff0fac474b10f59e2fc91
font_01_sfnt_off00008558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8558 18216 bytes
SHA-256: e46bf0cf057cdcc1f24e49826db2f5998f04ba9e64eff7e45517ce854ffbd61c

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