Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7dcdd3cf75fdd8f…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 06:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b3c04701a13de0b1265fd4ae3032c39 SHA-1: 52e9e2f3e9d6b103e97d99d455bcd512ee079cd0 SHA-256: b7dcdd3cf75fdd8f046dd9c0d5aaf92eda3cc8cc4e8cc68fd2b64c2222ec0641
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a lure for game hacks. The document body explicitly contains the URL http://netcdn.co/app/431946152/how-to-get-admin-on-roblox-for-free-game-hack, which is flagged as a malicious redirector. This suggests the primary purpose is to redirect 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.co/app/431946152/how-to-get-admin-on-roblox-for-free-game-hack In PDF document text
    • https://www.metal.hr/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-use-redeemed-cards-on-roblox-no-hacks_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-eclipsis-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-free-items-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/easy-robux-com_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_off0000332c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x332C 22248 bytes
SHA-256: 4f909cffac2a83e208d87475d95482eb9ebd04f1509022a74ea0ff41626d5464
font_01_sfnt_off000064b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 19472 bytes
SHA-256: 81869e431d4569a69fe927aefbccd07bdac45b6bbde18abc0ced43cfcb94756a

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