Malicious PDF — malware analysis report

Static analysis result for SHA-256 617e5413a14941cd…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 06:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0c55f741a755be85d4797dd8cf7631d7 SHA-1: d8a056cbdfd35b2cb7639bef274db27830451e8c SHA-256: 617e5413a14941cdc53d65ee4c504af38908bfdd8e0b4a35424cbc9488c8df40
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game hacks and currency. The primary malicious link identified is http://netcdn.tw/app/431946152/free-robux-sites-2021-game-hack. The document's structure and embedded links strongly suggest it is designed to redirect users to potentially harmful websites for malware distribution or phishing. No scripts were extracted, but the PDF's nature points towards exploitation for client execution.

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-sites-2021-game-hack In PDF document text
    • http://rgadventure.com/userfiles/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-map_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/ways-to-get-robux_GM431946152.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_off000030b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B2 22344 bytes
SHA-256: dbb8c7a5cf524e023f1b777817d47e5b9a9201ba400b15a0442eba0f1d78188f
font_01_sfnt_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 19340 bytes
SHA-256: bf872f38d37b2489c3690af0fb3a59d21ccad535cade2ac40decd632f59a44ea

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