Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bbc603ef7ecdcce…

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 19:40:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 17a29e9c6f1fa3df17b75227d7b44ca7 SHA-1: 6cd37fc73cc8cb773f2d0ed4cb67a4526dc84769 SHA-256: 1bbc603ef7ecdcce188817fcb396ce459b532b37f20534c8851eabcb46674995
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'Free Robux Generator' or 'Game Hack' lure, which is a common social engineering tactic to trick users into visiting malicious websites. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the embedded URL confirm this redirection to known malicious infrastructure. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.tw/app/431946152/free-robux-generator-no-verification-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/pokemon-go-free-apk-download_GM1094591345.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-how-to-get-free-robux-no-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/ways-to-get-robux-without-hacking_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-hack-an-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/pokemon-go-free-qwilfish_GM1094591345.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/hack-roblox-btools_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-printable-roblox-miniature-chocolate_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F1 22672 bytes
SHA-256: 899ed71f298e756149ccfbd0026cee6edd67cc05576a77c356f6a61febddd92c
font_01_sfnt_off000063c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C0 19072 bytes
SHA-256: e7f1824e88bb300dfe73d0982d2e974b610cf43959a10b1d34f5500451ac8bd8

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