Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f2a8561d97ccc5…

MALICIOUS

PDF

50.1 KB Created: 2021-06-10 23:34:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ddf76c32fe2a79312aa59ac374701f47 SHA-1: 0855a12a63c4505a4804e2a4bcba6bf203345b0d SHA-256: b6f2a8561d97ccc578bf7971baa53c5bf9aca4481cd7bddca5dae8c45e0005c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to a website offering game hacks, a common lure for malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lure users to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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 https://netcdn.tw/app/431946152/roblox-2-player-company-tycoon-cheats-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5421 28708 bytes
SHA-256: 841301bb72c5cc80d51295a3115653ef3bbe6f2c7984d7b542a87b7d6c9b265f
font_01_sfnt_off000093ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CE 3096 bytes
SHA-256: d05729863dc05721ada29044278030255eeda038236568e8246a87d3a8573d6e
font_02_sfnt_off00009e7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E7A 19176 bytes
SHA-256: f87e0a2220e207801309a7ceb29063a18a31e6519fc154eec262629f14787504

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