Malicious PDF — malware analysis report

Static analysis result for SHA-256 4772408caa093d4f…

MALICIOUS

PDF

32.2 KB Created: 2021-07-20 08:40:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 27162206969705d933acc39c730b8b69 SHA-1: 1b183112830333f4dc4da52bf9619a5b34c05c29 SHA-256: 4772408caa093d4fa736394c42e87bf9a1a2eeafb9c6ecfc9c998328f072b2d0
82 Risk Score

Malware Insights

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

This PDF document employs a common social engineering tactic, luring users with the promise of free game currency ('Robux Hack Me'). It contains multiple embedded links that redirect to external websites, likely serving as a distribution point for malware or phishing content. The ML classifier strongly indicates malicious intent, and the presence of game hack lures is a high-confidence indicator of malicious activity.

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/robux-hack-me-game-hack PDF link annotation
    • http://www.gzvisiontech.com/Public/upload/editorfiles/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gzvisiontech.com/Public/upload/editorfiles/can-i-get-minecraft-for-free_GM479516143.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_off00002c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C79 21292 bytes
SHA-256: 30509d7f19184f2a645bd982939ed1e58a1827ffa9627811feeabeb9493766ae
font_01_sfnt_off00005aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA0 18632 bytes
SHA-256: c8da56bbbb3df747cf2213435dde956968f4dc6fc6a1da517dd961d035af3807

Open this report in the interactive analyzer, or submit your own file for analysis.