Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b725b2f75e9206…

MALICIOUS

PDF

37.7 KB Created: 2021-05-21 16:14:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c17c2ebb9e9f43d95ed820023eb62e26 SHA-1: abb1307e33dd3e7dd43080b4b7a72f640af81154 SHA-256: e2b725b2f75e920624ce8ad2002882429e0134806af14ff31c9b33da7d222585
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a "free generator / game hack" which redirects to a suspicious URL. It also instructs the user to copy and paste content into a command-line interface, indicating an attempt to trick the user into executing malicious commands. No scripts were extracted, but the combination of the lure and the clipboard instruction suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0739

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/479516143/how-to-minecraft-for-free-game-hack PDF link annotation
    • https://education.minecraftIn 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_off000030f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F6 30468 bytes
SHA-256: f832902c3f7408b622a80ee673f7da38856d89a4c8871e401efd678f049d0f64
font_01_sfnt_off000073c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 17872 bytes
SHA-256: 34f4f209811985126907d7d3a0424133b48c05c486b67c85b9a962c5d68635fe

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