Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c269b1b05ee53d…

MALICIOUS

PDF

47.6 KB Created: 2021-06-08 16:33:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b605da9471df1251d4cbdaed0aeaa3fb SHA-1: 775956a13c9fb5e8db4dc37cade010dadf6e3519 SHA-256: d9c269b1b05ee53d64f034a918e7b106e8b33f1f9fd6df3d2722e721d8572cdf
160 Risk Score

Malware Insights

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

The PDF document contains a lure for a "Roblox Gift Card Generator Hack" which links to a known malicious redirector. This redirector likely serves to deliver a second-stage payload or phish for credentials. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/roblox-gift-card-generator-hack-game-hack In PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-to-hack-robux-with-cheat-engine-64-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/free-shirt-and-pants-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1magetan.com/__statics/gudangsoal/files/how-to-get-free-robux-hack_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_off000051f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F9 31364 bytes
SHA-256: ba6e7c7c994a5d5a1bb7b76e0116a1f4802fded44479b826241650c6da8186d8
font_01_sfnt_off00009695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9695 18580 bytes
SHA-256: c0f35b1ef7d8be1a9e0cb0b29259b6859ecbfcd552edbde6981836bc6098bf62

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