Malicious PDF — malware analysis report

Static analysis result for SHA-256 a898300002fbbf62…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 23:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac422be32b32210c2d48893cc00d028f SHA-1: c76cb26518dbba7c5429ce0aa22b15d4ad8e89db SHA-256: a898300002fbbf628f9c339b2811ff741e532a8a5d78789849b97db865564025
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, all promoting game hacks and free currency for Roblox. The ML classifier strongly flagged this PDF as malicious. The embedded URLs likely lead to phishing or malware download sites, attempting to exploit user interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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.co/app/431946152/citizen-roblox-hacks-game-hack In PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-bc-only_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-live-giveaway_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-bgs-hacks_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/lazyblox-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/baixar-hack-roblox-winrrar_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-change-your-roblox-password-when-you-are-hacked_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/more-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-free-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-accounts-girl_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-epic-minigames-speed-hack-download-free-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/undetected-cheat-engine-for-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-tokyo-ghoul-bloody-nights-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hack-to-play-bloxburg-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-generator-no-human-verification-2021-pc_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_off000032d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D3 22652 bytes
SHA-256: ffa243c61fef4f90b1a12a6a692ade9be80655f51ce622c6e12edb05014f8f0f
font_01_sfnt_off00006580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6580 18960 bytes
SHA-256: 2977d0ce97370dde70d13625049384d568d702205f688c1018e5ee26613042c3

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