Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4948d388530df0…

MALICIOUS

PDF

44.4 KB Created: 2021-05-13 17:05:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 72a2204db491870149c705da05145452 SHA-1: e665a58a76d4c0117e1d6e083d3f33546137b4f5 SHA-256: 7e4948d388530df0ec262fce61ec49ea09d8d44af11b9177321a3224f70616ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, specifically advertising 'game hacks' and 'free robux'. The primary redirector URL is https://netcdn.xyz/app/431946152/roblox-gang-game-hack, which is designed to lure users into clicking through to potentially harmful content. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to malicious infrastructure.

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 https://netcdn.xyz/app/431946152/roblox-gang-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://collectrobuxIn 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_003_off00004999.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4999 28180 bytes
SHA-256: 35df7e92bcaa2a6a2455abcc8c6b13f2a4a19b62a45ae3cb2c612b3d6f34a9f2
font_01_sfnt_off00008af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF4 18300 bytes
SHA-256: 91f666fe4564d776efc04868df6c7de748ea3d878c0f7be790052d713bbb3004

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