Malicious PDF — malware analysis report

Static analysis result for SHA-256 20e4bd801d45c93a…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 23:06:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ece70211024f7782b783a36f33d051dd SHA-1: 4b377afcf0b0ac4e90bf14d831dfce04ab73e7ab SHA-256: 20e4bd801d45c93a9ad7000c7495877ac923135562df9968cf0c23af8d12d795
82 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it links to a game hack lure. The embedded URL, 'https://netcdn.online/app/406889139/coin-master-daily-free-coins-link-today-game-hack', is presented as a way to get free game currency, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-daily-free-coins-link-today-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-roblox-shirt-templates_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_off0000505e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505E 25392 bytes
SHA-256: 65be7f5105757f5065f30652af353983d65cc8c486c05909b5ff7e14dbe172e7
font_01_sfnt_off000089b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B9 18476 bytes
SHA-256: 4e997083ece3f599a87e8960a4d85608706b67604b90560f7b4d74d0b586c961

Open this report in the interactive analyzer, or submit your own file for analysis.