Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd00c6a60f01065e…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 22:52:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 036aa26923d416442a9ac4dc10253c38 SHA-1: aeb4d37fc85fca6a8d784b333783df00581775e5 SHA-256: dd00c6a60f01065e7becc4d54f716e8220fda33319ea8101e23abfdec6dd56d4
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a phishing attempt to trick users into visiting a malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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.online/app/431946152/earn-robux-for-roblox-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-link_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-spins-apk_GM406889139.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
stream_004_off000050ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AE 30704 bytes
SHA-256: 5c891eb7161118a260acf19c3d3450b92d02cc5c35a4d52550dceb1c21e38eef
font_01_sfnt_off00009706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9706 18316 bytes
SHA-256: c0c60b14685fecf9466c28df4c763cf89eb547ddebc436478ad41afe4273dec9

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