PDF static analysis report

Static analysis result for SHA-256 45dd890e133bde4b…

SUSPICIOUS

PDF

29.3 KB Created: 2021-07-19 14:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 46c1ba7505a1908ba57c2603900b8d55 SHA-1: 167c159176f9da20ae10f303b850680da1277d6e SHA-256: 45dd890e133bde4b2aaecc433a2973353b8b49963e24a78828450c8f4a0b3413
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link and text related to a 'free Robux generator' which redirects to the suspicious URL http://netcdn.tw/app/431946152/robuxy-com-free-robux-game-hack. This lure is commonly used in phishing campaigns to trick users into visiting malicious sites. Although no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in game-related cheats.

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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/robuxy-com-free-robux-game-hack PDF link annotation
    • 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_off00001f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F92 21924 bytes
SHA-256: 362aace6ea9efb5a9487a3c2cac9c999f4ccc30428f31f31a8a775ee629aedd6
font_01_sfnt_off00004ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF8 18640 bytes
SHA-256: 895c40dcc8ab3e314fdd76083fc6d63a7047cdae3d38e24120e4d24b4e40b9b1

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