Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3677e0a795fe0a…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 04:41:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 84f6826fc36ebe85d80beb0335fe74f2 SHA-1: e642f34863be9006020ffd39b54cd876a3356b0e SHA-256: 7d3677e0a795fe0ac1a14f4b5d6f028130b5d3e4114ff221902e18a00c5569b4
160 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, one of which is explicitly flagged as a potential download URL for a game hack. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains references to game hacks and free currency, reinforcing the lure. The presence of multiple related URLs suggests a campaign focused on distributing potentially unwanted or malicious applications disguised as game cheats.

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/roblox-create-avatar-free-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/cheat-codes-on-xbox-one-for-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/your-free-trial-roblox-meme_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-muscles-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-can-you-get-robux-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-working_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-hack-apk-latest-version_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hacks-for-vehicle-simulator-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/a-free-rix-code-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-mad-city-money-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-50-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-mod-apk-latest-version-free-download_GM406889139.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_off000034a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A1 22096 bytes
SHA-256: 9b2b27e9fd0f8af501a77d47571c3d7243117ada20965eb9612dc3631443ca3f
font_01_sfnt_off00006581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6581 18868 bytes
SHA-256: 88bbc22e28fe16e312143021fca52fe9d7e7856959250d75375790308b973440

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