Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17e00626c6173a9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 09:03:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5fb37418851ba82d462c827b12d83899 SHA-1: 14a2e2d497b72631a418967f2430be8b609b93c1 SHA-256: e17e00626c6173a956f26ed4117ed0e5263fd8800f3377fe54aab5986cbcccff
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks, indicating a phishing or malware distribution scheme. The embedded URLs, such as http://netcdn.tw/app/431946152/instantrobux-game-hack, are designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interest in free game-related content to deliver a payload.

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/431946152/instantrobux-game-hack In PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-pc_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-roblox-accounts-november-2021_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-bloxburg-free-money-hack_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/weird-roblox_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-jailbreak-free-money-codes_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/can-you-really-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/one-time-payout-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-robux-generator-2021_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_off000034be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BE 22156 bytes
SHA-256: 64f8d40111575d1595157c0d0bc8fed069ea849acb4c52afb9d77505201cdcde
font_01_sfnt_off000065b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 18656 bytes
SHA-256: 5a13a4ba7d4aa3ba564163d7fd1f4e40de414e0c8b16d10ac9018e4301010f0d

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