Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be0c3364276d115…

MALICIOUS

PDF

37.3 KB Created: 2021-05-19 21:46:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e7dee1be4c1cacb23c63793d40242f80 SHA-1: a67a3946cb0b4510403a33c0609f09bffd3a0f91 SHA-256: 5be0c3364276d11545d1ab9f4a53386d5fb94fe58b77444cd4e787ba7b3aacf5
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically advertising a "free generator / game hack" for Roblox. The document body also contains a prominent "CLICK HERE TO ACCESS ROBLOX GENERATOR" call to action, reinforcing the lure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/free-draw-2-roblox-game-hack In 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_off000033bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BB 26224 bytes
SHA-256: c8d72b3ea7f5b13fd9d737eecd0a3c49346422f128b823520a863105ba1694c9
font_01_sfnt_off00006f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F68 18632 bytes
SHA-256: 1948321e46036ef7a86fce7363c42741d482fdecd1af70e946b235d8b00c49b1

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