Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20324a51bd5c1fc…

MALICIOUS

PDF

39.7 KB Created: 2021-04-22 15:00:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f76e70a7700f4c70daf728e8fbadcebe SHA-1: 2672c0fe61e30d052744ae5d27f3c78e74baa39d SHA-256: c20324a51bd5c1fce1ade3bbfad29bea4d9ff8fc685265a7fda6cc179469c79f
102 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Roblox Free Admin Script' and directs the user to a URL that promises game hacks. This URL, https://netsecure.pro/app/431946152/roblox-free-admin-script-game-hack, is associated with malicious activity. The PDF structure and embedded content suggest it's designed to trick users into visiting a potentially harmful site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9215

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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://netsecure.pro/app/431946152/roblox-free-admin-script-game-hack PDF link annotation
    • http://stroygrad-spb.com/images/roblox-hack-game-2021.pdfIn PDF document text
    • http://stroygrad-spb.com/images/robux-promo-codes-2021-no-hack.pdfIn PDF document text
    • http://stroygrad-spb.com/images/roblox-salty-kid-thinks-im-hacking.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
stream_003_off00003760.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3760 28420 bytes
SHA-256: 33c724fcea7eddf01e038e3cc9850f017d089d522f116346b4ff7a1eb900ec58
font_01_sfnt_off0000784f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784F 18784 bytes
SHA-256: 0d186a67970d37dc81f0b40f8f7917958dc7ece3a47822d53c2593eaa3af0977