Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cac01cab46a18c6…

MALICIOUS

PDF

31.9 KB Created: 2021-07-20 14:30:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 075bb498c6362993296a0f314443a3d1 SHA-1: 1cb2fb122fa9c0b2dc347f6d70b28c9b85680c50 SHA-256: 9cac01cab46a18c6dfd5c2bde17ee0cdec1183bb4a4337768e03437bd0f13e0d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Minecraft, to entice users to click on a link. This link redirects to a website that likely hosts a malicious payload or further phishing content. The presence of multiple PDF_URI and PDF_GAME_HACK_REDIRECT_LURE heuristics strongly indicates a social engineering attempt to lead the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/479516143/minecraft-hacker-skin-game-hack PDF link annotation
    • http://www.yaringhospital.go.th/UserFiles/File/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000029f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29F4 22588 bytes
SHA-256: 4d46146c81adae8b5fa81164b12410db207c6f391c83484ec9880f5415e6f4aa
font_01_sfnt_off00005c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C63 17740 bytes
SHA-256: 91fe2762de83ff68ec278d498415159af7d0ffb5c1d0151dc7294afbb77550eb

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