Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3241b5c60cb975b…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 04:28:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aab076b56f49aad56a48dd8948107069 SHA-1: d128f8a3e85f266b7dbdf64bf46d5ec43dfcb60a SHA-256: e3241b5c60cb975b57368edb944e04074b92b5493d2ace1f36cc21831c0eb0cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as free game hacks or currency generators. The primary lure is "10 Ways To Get Robux For Free", directing users to http://netcdn.co/app/431946152/10-ways-to-get-robux-for-free-game-hack. This pattern is consistent with phishing or scam campaigns designed to lead users to potentially harmful websites.

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/431946152/10-ways-to-get-robux-for-free-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/casper-hack-roblox-jailbreak-noclip_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hacks-for-boku-no-legacy-alpha-2x-exp-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-fast-and-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-how-to-get-free-bc-tbc-obc_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/como-conseguir-robux-sin-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/is-roblox-free-on-android_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_off00002fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCB 22080 bytes
SHA-256: eccfc3348e3edbb5546452ecc7983b1ecda1c32829536f20c4eccf519489e853
font_01_sfnt_off000060bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 19476 bytes
SHA-256: 24dd2c33053ce423b63a76ce589de3bfc9cf46d1f2b55b1ce044009a3e154df5

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