Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c3293574984ef8…

MALICIOUS

PDF

33.7 KB Created: 2021-07-20 02:55:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 41db853f44295d2220de825beddb88f2 SHA-1: 3ce833bdaa9f1f64ca2377b9e1a12a0d74e76174 SHA-256: 45c3293574984ef8fc13d5c05f99cf40f262fd7d7f71e2c9047c9f7fc61f1448
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" and game hacks, directing users to a malicious URL. The embedded content and heuristics strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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-kid-friendly-no-human-verification-game-hack PDF link annotation
    • http://forsazh-51.ru/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://forsazh-51.ru/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://forsazh-51.ru/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://forsazh-51.ru/images/coin-master-free-coins-and-spins-app_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
font_00_sfnt_off00002a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A90 22944 bytes
SHA-256: 5289faef14063f22bc406f0124c3d4c9c6351e1ad9fe92c115cd7399cd1c4aee
font_01_sfnt_off00005e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1E 19476 bytes
SHA-256: c5aca30ee482ab97ef5a663076df94f5e48f22263153ac395a5dfe60051950ba

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