Malicious PDF — malware analysis report

Static analysis result for SHA-256 61232c32ec60577b…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 07:40:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c78a056c2091e6a96269e9f5a9cddc09 SHA-1: 9ed038b2d5f1799d64c6b47e5728d7fcf3689c31 SHA-256: 61232c32ec60577b8e193dc2b558bd7f453f917460f207b27b31f1bb3c9664a3
142 Risk Score

Malware Insights

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

The PDF contains a high-risk lure for recovery secrets and links to external URLs promising game hacks. The ML classifier also flagged this PDF as malicious. The embedded link likely leads to a site designed to steal user credentials or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/free-spin-coin-master-2021-link-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/original-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.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_off00004f24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F24 24760 bytes
SHA-256: a46d1ab4ca584a06aef717207b2313891c124287a33f96be1765193900b7fcc2
font_01_sfnt_off00008860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8860 18456 bytes
SHA-256: 7500aca679d0fadfbda1e17cf023a195ee80a601fef81e7f7ced8cf50182af56

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