Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e2645d8202f3d6…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 10:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6e9ed8b987a17b2ef1245a56f6281c15 SHA-1: 6dda0958f5f3f4c1078f57c460f52eb13cdc48d3 SHA-256: 68e2645d8202f3d6fd6ac14bfec88ab637cbaf6a4ecf485cd8d96d79fe69da18
92 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'game hack generator' which redirects to a malicious URL. The document body also contains instructions to copy/paste content into a shell, indicating an attempt to trick the user into executing commands. While no scripts were directly extracted, the nature of the lure and the embedded URL suggest a phishing or social engineering attack aimed at leading the user to a malicious site that likely hosts further exploits or malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0344

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/431946152/how-to-hack-roblox-to-get-robux-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003233.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3233 36428 bytes
SHA-256: 0b8f282383b9844e4c7c5f25ac97d0bc7cfffc1f67ca3f8d2a1281811cf928c7
font_01_sfnt_off00008334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8334 18588 bytes
SHA-256: 6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b

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