Malicious PDF — malware analysis report

Static analysis result for SHA-256 d33b0c72ef78320d…

MALICIOUS

PDF

33.8 KB Created: 2021-07-01 06:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9768a28f7838dbc5e1e7c94c54af05a SHA-1: ccb2e632217a528b9d56aa6b0487985c93e51e3d SHA-256: d33b0c72ef78320d1784cb65caea386ec76ce7a6465b8358c6ee64bb9a15a41e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary lure appears to be a 'Roblox Hack' which leads to a known malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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-hack-kavra-rolplay-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-roblox-groups_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-jailbreak-noclip-and-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-3d-online-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-lumber-tycoon-2-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-a-shirt-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-skin-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/gun-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-no-verification-code_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
font_00_sfnt_off00002f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F13 21728 bytes
SHA-256: 4290b2018c53b658ccf680c67998a4e09417ba420dfeed9444a5e049a70fe469
font_01_sfnt_off00005eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBA 19124 bytes
SHA-256: bc8f53478861ed10a01064551615b27f209c4515be6c73d6f38eb5adc3eb7764

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