Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf946a7ebdd4bea…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 19:10:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1ac4a5ce2daf3fcae69f9276f193308f SHA-1: 25e2647e0308c544fdb8f915d96fe2e0fc2bd8dd SHA-256: bdf946a7ebdd4bea6731c9ee0dcacad195c4ac59c3a2fd5114ec65062d9aff40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a 'free generator / game hack' which redirects to malicious infrastructure. The document body and heuristics indicate a phishing attempt to trick users into visiting a malicious URL. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/roblox-injector-hack-2021-synapse-game-hack In PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-codes-28_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/cheat-engine-scripts-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-apk-october-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-free-robux-no-fike_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-free-items-on-roblox-2021-october_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-android-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-robux-and-tix-mega-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-free-robux-2021-no-joke_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/20210-free-robux-daily_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/zoo-tycoon-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-jailbreak-mobile-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hacks-online-no-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/project-pokemon-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-init_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-on-bloxburg-for-free-on-roblox_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_off00002f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F25 21624 bytes
SHA-256: e3d8de307f8a580265a3067e8d399d35590d8f164e34cfb8e26df2d6e07d31cb
font_01_sfnt_off00005eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAE 19704 bytes
SHA-256: 78f4a48b1c5cee455f0e75008cb418658a5513928ab26a60fa7bdc78d242c913

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