Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b64898faa54599a…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 05:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 73d2cdb29c4b03fb8bc4df7cc95f2391 SHA-1: 40ac3b085fb3629b50e314da8353cfca94926cff SHA-256: 6b64898faa54599ab0d9b3d2866a309643124da21e36a68902e33c5723d763cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a visual download button, all related to game hacks for Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, indicating it likely serves as a lure to download malicious content or redirect users to exploit sites. No scripts were extracted, but the presence of multiple exploit-related URLs suggests a phishing or malware distribution attempt.

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-jailbreak-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-inventory-code_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-cheat-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-use-cheat-engine-63-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-sword-fight-on-the-heights-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-use-hack-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/test-roblox-clothes-free_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_off00002e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E50 21704 bytes
SHA-256: 48df6bbc774cf9a00d1ff920849f3aec8c4a0e28b0a8916a6ebbe29ca019af7a
font_01_sfnt_off00005e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E05 18944 bytes
SHA-256: 585eb2e57ee15a5676d9142a374fb6e222d79575fbdb5812fef71ff24be9eb13

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