Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c7589711b1c0eb…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 11:28:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 211a89e02a2a97569146cfb39ca929fe SHA-1: dcfa51196dd6c3fd46da65a264568de4ba0bea1d SHA-256: 76c7589711b1c0ebb222c8d7fb93257b4f490c6694daf63de29ae4859655d8c9
200 Risk Score

Malware Insights

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

The PDF document contains a lure for a "Coin Master Link For Spins" generator, presenting a fake CAPTCHA to trick users into interacting with a malicious link. This link, https://netcdn.online/app/406889139/coin-master-link-for-spins-game-hack, is hosted on known malicious redirector infrastructure. The document's structure and embedded links suggest it is intended to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/406889139/coin-master-link-for-spins-game-hack In PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/easy-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn 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_off00005439.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5439 25276 bytes
SHA-256: 30a7de6ecd513c7ce5dfb5870e742186fe237fb4282856ad31f371370311b973
font_01_sfnt_off00008f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0A 18056 bytes
SHA-256: 95118de0f1fa2d9d8d6d34d7ce9f6e9c56d43c25fce4d2a4bd556d275959b9e0

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