Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7127c8a0caf9077…

MALICIOUS

PDF

36.3 KB Created: 2021-05-20 15:04:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3072e22f87b1065632c99f3313be20ba SHA-1: 1385708fdce88c879b4511105f7ee97699044123 SHA-256: d7127c8a0caf90779ce2c846ab33b5198e233cadf09dc3b20e4c76e40dc33a98
82 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic indicating it links to a game hack generator, a common lure for malicious content. The embedded URL `https://netcdn.xyz/app/431946152/roblox-hack-game-hack` likely serves as a redirector to a malicious site or a download. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in game cheats to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/roblox-hack-game-hack PDF link annotation
    • http://galletta.com/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://galletta.com/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/free-spins-and-coins-coin-master_GM406889139.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_off00003387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3387 24992 bytes
SHA-256: 1b91a15480e43f34ba382ba7832f869fa35dabc4f036f57398ba7afb39b6423c
font_01_sfnt_off00006c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9B 18184 bytes
SHA-256: 1e306c7abfe58da704748ef58ff750010dbbd803bf497203b0bed85dd8d0d5c5

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