Malicious PDF — malware analysis report

Static analysis result for SHA-256 65af225a1b944f01…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 01:22:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ff42b8112d810b64de8cc07b1679f443 SHA-1: 2b65481bc4273ccdcff8dd063c56e13b4ee5519e SHA-256: 65af225a1b944f0123ba6a87d6b57054a5ebe16ceaaa478507fd1198b12f9b13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to a known malicious redirector. The embedded URL 'http://netcdn.tw/app/431946152/how-to-get-free-robux-on-roblox-game-hack' is a primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a social engineering attack aimed at redirecting 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.tw/app/431946152/how-to-get-free-robux-on-roblox-game-hack In PDF document text
    • https://goodtools.tw/upload/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/cheat-money-roblox-tycoon_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-hole-in-the-wall-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-5-steps_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-free-gameplay-no-download_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/beautiful-hair-roblox-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/get-your-free-robux-today_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://goodtools.tw/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/cheat-roblox-knife-capsules_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-into-your-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/earn-free-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E85 21968 bytes
SHA-256: 5d1a9f67b6798ab0703628b19bc0ffdb54b5f055956e5acfa3826e99d21dee4c
font_01_sfnt_off00005ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE5 19056 bytes
SHA-256: 22e79bf31db193f266ad8ef0f47d1a9e736b831aec58415b80c9b2f57893c59e

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