Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16716137afdd2aa…

MALICIOUS

PDF

37.7 KB Created: 2021-05-11 04:11:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9c96a2aea7aec5d77031cfc73afb7469 SHA-1: fce9f8fbefde7a836c608836dff99a166984a69a SHA-256: a16716137afdd2aa00a5b7254e2d7cc39ff7766ed8c896de306e139e64f83f4e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic indicating it links to a 'free generator / game hack' redirector, which is a common lure for malicious websites. Additionally, it contains a 'clipboard command execution lure', instructing users to paste content into a shell. This suggests the document is designed to trick users into visiting a malicious site and potentially executing commands, likely as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/minecraft-creative-mode-free-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
font_00_sfnt_off00003294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3294 29608 bytes
SHA-256: 9a963c175edfd82d390209e704b0ea474e6b44fcee33463f60b689402cdece52
font_01_sfnt_off0000731f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731F 18000 bytes
SHA-256: f6a8cbfed7e544a7ed90cd1995fc8c45102f25219f8fae40911eda120a1a4630

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