Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19eaab00d1bd79d…

MALICIOUS

PDF

38.6 KB Created: 2021-05-13 13:35:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2f1cc1d6334593cf7cb8a54743c51687 SHA-1: facf9f19f29eed072974ce5095f164f62ddcc198 SHA-256: e19eaab00d1bd79df96e83938dd68e518eba2ba63e64dddddb4154124726cfce
130 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'Blox Land Free Robux' game hack, which includes a prominent call-to-action button and embedded links. These links redirect to known malicious infrastructure, specifically `https://netcdn.xyz/app/431946152/blox-land-free-robux-game-hack`. The document's structure and content strongly suggest it is designed to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/blox-land-free-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33CE 24476 bytes
SHA-256: 5fe5df053c5f3fb686bb0bfb112617e4fcfaaba216e79883e7b56d3326f4ebc0
font_01_sfnt_off00006ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC8 2824 bytes
SHA-256: bd082aa73fbb1a8b3bd2e5c998d3d8e31d1dfc71ea36f846af746f69a0d2ab7f
font_02_sfnt_off0000747c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747C 18492 bytes
SHA-256: 43325585731fb5abef9629b4ee3027de7c41cdd34c16702b82f5d396e8a55598

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