Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f22e411479223ce…

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 07:25:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ccae543089f335a4d8889f9c187e2668 SHA-1: 908674b8be6143eb7deda0981c82f17950355b93 SHA-256: 2f22e411479223ce653b012178e17756afa548c6d24c5dede9bcca14d0969674
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for 'Free Robux Card Codes' and 'Robux Generator', directing users to the URL http://netcdn.tw/app/431946152/free-robux-card-codes-game-hack. This URL is likely a redirector to a malicious site designed for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the document body text reinforces the lure.

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/431946152/free-robux-card-codes-game-hack PDF link annotation
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning2.man4sukabumi.sch.id/__statics/gudangsoal/files/roblox-hack_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
font_00_sfnt_off00002acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACF 22908 bytes
SHA-256: 794aca39f9540ec8c352d8e4c3c29cbf5a1e2eeec6a1eff1fdc46cf5ee8f4543
font_01_sfnt_off00005e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E42 18604 bytes
SHA-256: 76f154967b1764cdb0e080aec3bf58540dd9c05f424ffe6cf9398947fbdad8ca

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