Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fbbb51188c44c78…

MALICIOUS

PDF

35.4 KB Created: 2021-05-22 06:37:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 02bf5edd28316cc3278375959b511bee SHA-1: caa86f7971d16e4242f1189ef5fee610a9192466 SHA-256: 5fbbb51188c44c785413b0cfbb761f33e6ceb84abb5cba39559589a24b164b97
82 Risk Score

Malware Insights

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

The PDF document employs a common lure related to game hacks and generators, specifically for Roblox, to entice users to click on a malicious link. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-hacks-on-roblox-game-hack, is flagged as a redirector for game hacks. The document body also contains a call-to-action to access a Roblox generator. While no scripts were explicitly extracted, the nature of the lure and the external links suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/431946152/how-to-get-hacks-on-roblox-game-hack PDF link annotation
    • http://paro.net.ua/images/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-stream_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_off000031e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E2 23912 bytes
SHA-256: 3a3cbf7faf4647ab5ee41e2a3aeae60b92e7c4d5f14462a118491c16cef69d21
font_01_sfnt_off00006830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6830 18452 bytes
SHA-256: ed539d80bc369dd702df4747cf339a34006ca6a67146fd9e518381a10bf40547

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