Malicious PDF — malware analysis report

Static analysis result for SHA-256 423659227728a676…

MALICIOUS

PDF

35.2 KB Created: 2021-07-07 03:48:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f64363401ce89073ffc138aaa46fb35a SHA-1: 9253b3615a52147fe35a18d96c5c81525df93c73 SHA-256: 423659227728a676a8c4db85aa74a4a6dacd5c4d7f89d954fecc10bb2702aedf
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free generators, directing users to a known malicious redirector. The embedded URL, http://netcdn.tw/app/431946152/roblox-hack-generator-game-hack, is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free in-game items, likely leading to further malicious content or exploits.

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/roblox-hack-generator-game-hack In PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-sign_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/cheats-in-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/noob-pro-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/play-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3322 22424 bytes
SHA-256: fd0c27650d5c2c8217fa20228ad830d717c433871abf2e244d83b893f452fe83
font_01_sfnt_off00006523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6523 18760 bytes
SHA-256: b79899937f6f59d67c0cc016ae9e295c0b2eeda93cfd6b0750b290eebb9c7341

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