Malicious PDF — malware analysis report

Static analysis result for SHA-256 e13f5f6d15590008…

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 01:09:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b0693cb7536edd57dd36afbf0bb97925 SHA-1: ae21d6424f59a42f745684d4077cdf44b82cb0f5 SHA-256: e13f5f6d1559000898886402f714d388e8603743533c59169d2609ff8de5b411
82 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one explicitly identified as a 'free generator / game hack' lure. The ML classifier strongly flagged this PDF as malicious. The embedded links likely lead to a second-stage download or a phishing site designed to steal credentials or deliver malware. No scripts were extracted, but the document's structure and content point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-restaurant-tycoon-money-cheat-game-hack PDF link annotation
    • http://gornjastubica.hr/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/robux-boost_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-spin-hack_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_002_off000031cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31CC 22856 bytes
SHA-256: 97728361e631aa3067bf1bc00d417a4d38fba2d16be5372c9ba5ac50da1cef0a
font_01_sfnt_off000064eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EB 19084 bytes
SHA-256: d496eb4792de396a0333dacc9d98280427b4f1a85e595ebb701a9de02bd54a79

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