Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb66d56b26ca3cab…

MALICIOUS

PDF

36.6 KB Created: 2021-05-10 09:54:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d5037087d5dd83d6614b6895c8cd3b9f SHA-1: 88090aecdad33537bebc86a21b3374b6cea89b45 SHA-256: fb66d56b26ca3cab7853f82c2c080d3f8c8c49ae56bbb3ed5ec671b2ca84d3b3
92 Risk Score

Malware Insights

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

The PDF contains a high-risk lure related to remote support tools and a link to a "free generator / game hack" which is likely a scam. The document body contains text related to Minecraft and a call to action to download a generator. The embedded URL points to a suspicious domain, likely leading to malware or a phishing page. The presence of PDF_GAME_HACK_REDIRECT_LURE and SE_REMOTE_SUPPORT_LURE heuristics strongly suggests a malicious intent to trick the user into downloading a payload or installing potentially unwanted software.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/is-minecraft-free-on-switch-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_off00003446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3446 25596 bytes
SHA-256: cee328d6b598cfca7e16351c0e5d98044d504b9fecf9f5882c76c76d98279a7e
font_01_sfnt_off00006ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF9 17896 bytes
SHA-256: da2ff63c2c6efe847bf2f560eba074f8e9a052981825778b960d82d1bfcd49f3

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