Malicious PDF — malware analysis report

Static analysis result for SHA-256 067252977b74ddf4…

MALICIOUS

PDF

33.6 KB Created: 2021-07-08 11:51:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 41aa18171e08fb7bbc4fa6cee9897e29 SHA-1: c01ee3e9256049c8f2436b8f62e721dbbe1fd22b SHA-256: 067252977b74ddf4dfac35fa5124579a0b4a137683e4cfaee71e8bf238ec9358
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as a 'free Robux generator' or 'game hack'. The document body explicitly contains the lure text and the primary malicious URL. This indicates a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

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.tw/app/431946152/free-robux-that-actually-works-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/auto-clicker-for-mac-roblox-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-conseguir-robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-for-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/john-doe-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-ultimate-gamer-365_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-download-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacker-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-conseguir-robux-gratis-100-real-sin-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-a-free-domino-crown-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-roblox-powers_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_off00002a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A76 22480 bytes
SHA-256: 77ecc4b6ae3291bdcd2eb65a879f641f4f4732f438e9111e3054d4f47ca19ffe
font_01_sfnt_off00005cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD6 19608 bytes
SHA-256: d52712f1a35e8680be3c45e78173014feb66661a2560c5e73c6934237b8ae3d4

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