Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b983b1129b92a0d…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 15:46:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9c9945404ec1126bb94af25af53a43aa SHA-1: 10ae326fbc04399881b5831f29c81ac2630a2737 SHA-256: 4b983b1129b92a0d31ee17cd1ef24e7f744387107023f4a3d4f8df657018382c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirector lure, pointing to a malicious URL. The document body text and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a potentially harmful site. The ML classifier also flagged this PDF with high confidence.

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/cheat-codes-for-dungeon-quest-roblox-game-hack In PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-synapse-download-free_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/game-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-promocodes-with-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-spieler-hacken_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-how-to-get-admin-for-free_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/hacking-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-no-genertor_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-player-download-2021-free_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_off00003080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3080 22368 bytes
SHA-256: 0e7c78162443947be065769c617c742e98251048051d7bf1f5026d78ed78d8bd
font_01_sfnt_off0000624e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 19560 bytes
SHA-256: a38f6d1c93c0d0039c7bd46cef53c066a97ce0afdc463ec80e86d5d74f086065

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