Malicious PDF — malware analysis report

Static analysis result for SHA-256 599dadab4c8e92f8…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 16:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8ddf3a4183bce44035ae38cd788a535c SHA-1: 6cdb3172d2b6c76395ab86cad6ec1f7c439fb45d SHA-256: 599dadab4c8e92f822263fc6176f586eb2632ceea4efe21ea073a601f484f1b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The heuristic firings confirm these links lead to known malicious redirectors and are designed as a lure. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt, likely intended to lead users to a site that hosts further malware or exploits.

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/479516143/free-minecraft-shaders-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-member-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hair-extensions-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-do-u-use-cheat-engin-with-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/pubg-uc-and-skins-smm-panel_GM1330123889.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/tiktok-free-generator_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hackear-roblox-apk_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/tiktok-app-install-free-jio-phone_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/old-roblox-accounts-for-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_off00003331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3331 22636 bytes
SHA-256: d4ed95ff362ad1b3135a74a6f9ca20cafc04dfbfa227a072e0a3da3b8c9054e9
font_01_sfnt_off000065c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C8 18196 bytes
SHA-256: 772c6e2484254b38356c2a5cba65d97f7b15622d6ad87cf60449c5024fb57b41

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