Malicious PDF — malware analysis report

Static analysis result for SHA-256 0384c7cb86c921ac…

MALICIOUS

PDF

43.1 KB Created: 2021-04-22 21:46:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b7d718e229c204323d77a8babe18de0f SHA-1: 8089abd06a5738102b70a04caecc06c1b13efd43 SHA-256: 0384c7cb86c921acb8e8dc6b8ce67f349c7267a89a33f56af08ebcac6c036a06
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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://netsecure.pro/app/431946152/how-to-get-free-dominus-in-roblox-game-hack PDF link annotation
    • http://wattkit.com/images/free-premium-roblox-accounts.pdfIn PDF document text
    • http://wattkit.com/images/onlyrobux-site-roblox-hack.pdfIn PDF document text
    • http://wattkit.com/images/where-can-i-get-free-robux.pdfIn PDF document text
    • http://wattkit.com/images/free-items-on-roblox-names.pdfIn PDF document text
    • http://wattkit.com/images/roblox-lumber-tycoon-2-cheat-codes.pdfIn PDF document text
    • http://wattkit.com/images/roblox-guest-shirt-free-2021.pdfIn PDF document text
    • http://wattkit.com/images/free-robloxs-code.pdfIn PDF document text
    • http://wattkit.com/images/roblox-murderer-mystery-2-hack-cheat-engine.pdfIn PDF document text
    • http://wattkit.com/images/unpatched-cheat-engine-roblox.pdfIn PDF document text
    • http://wattkit.com/images/cheats-for-roblox-hide-and-seek.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_off00004137.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4137 29872 bytes
SHA-256: 1436fa1d79d98d9001b789db97266a865553ecc2fec3a41ed928fa3bbaa649c4
font_01_sfnt_off00008525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 18904 bytes
SHA-256: 95a9ec48c30c38e85b9784181074fc56f6ef32f5bb53f2938be7fbc3a97f7d44

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