Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9b9cc6c0fd4a38…

MALICIOUS

PDF

44.6 KB Created: 2021-06-10 20:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5d96a9f47cf54c53af38d05ac4b728d SHA-1: 6a4c39323f9d6b472b24021ed9af4f8787dc2f36 SHA-256: ed9b9cc6c0fd4a38e407abd3c9555e1e07bff5a11f8376ed57c7ce4d73690457
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary redirect URL is https://netcdn.tw/app/431946152/gobux-me-free-robux-game-hack. This indicates a social engineering lure designed to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/gobux-me-free-robux-game-hack In PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/oprewards-login_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/robux-generator-hack-tool_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/free-tiktok-followers-quora_GM835599320.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.roblox.coIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000500c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500C 26264 bytes
SHA-256: 842a4578bf969e0e3277ec4d77213afbe42a266313770728f5299196287b0eaa
font_01_sfnt_off00008bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFE 18212 bytes
SHA-256: 4992ea7a9e38094925788f0a5295420b93c743d0f041964060c39502cb3481b3

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