Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9d9524b3c4c4a8…

MALICIOUS

PDF

42.0 KB Created: 2021-06-14 01:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ce381cb2d9b12e390da3105fc06b7bf4 SHA-1: 2d7fc982b854e445b49ce8316703af2c63e0b17d SHA-256: 0b9d9524b3c4c4a8414830c1dbe1acf8daf334b506b5f11d486b579c0a64ab89
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirectors and other PDFs hosted on suspicious domains, masquerading as game hacks or generators. The document body, though partially garbled, contains references to 'free generator / game hack' and a URL that aligns with the heuristic findings. The embedded links likely serve to redirect users to further malicious content or phishing sites, constituting a lure for potential victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-shirt-template-free-to-use-game-hack In PDF document text
    • http://library.umla.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-windows-10_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-codes-for-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/10-free-spins-coin-master_GM406889139.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_off000045be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45BE 24932 bytes
SHA-256: ce21513c48641325f776a4edabda99b9bc2a00e747100e7c4f37b6f1611a1f5a
font_01_sfnt_off00007f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 19188 bytes
SHA-256: 354df707deb37b22cc87beb5710de91b24e48ee5fd5d127c786a72dbebbb7067

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