Malicious PDF — malware analysis report

Static analysis result for SHA-256 807c862a29ec1212…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 20:48:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 14c2ab519bcc5b2e608f349be3a4a119 SHA-1: 09a54cf93c27a7936587e6143dcfece093f74739 SHA-256: 807c862a29ec1212396c64f4cd24dc66ed9b0b28e706b704c0e33fe08472671b
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', which is a common lure for phishing or malware distribution. The embedded URL points to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to malicious sites.

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.tw/app/431946152/free-robux-generator-no-human-verification-game-hack In PDF document text
    • http://lib.mbp.ac.id/repository/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/911-whats-your-emergency-my-roblox-accout-got-hack_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/get-free-roblox-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/chreck-cashed-v3-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-scripter_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-free-draw-how-to-draw-a-vagina_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-gold_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
font_00_sfnt_off0000308d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308D 22200 bytes
SHA-256: 961c13ff746ae5b128b4f8e6ab357d452a26fce7118a97062b37d1c5b3cdd162
font_01_sfnt_off00006214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6214 19336 bytes
SHA-256: 1e7a5ee1c2d4ea33325644fd63b1f7e257f54daacec13fb4b037f0c912b7aa4c

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